If you launch a cannon at 15 degrees above horizontal, and another cannon at 75 degrees above horizontal, both will have same horizontal range
In a projectile motion , horizontal range can be calculated using formula
Range = [tex]u^{2}[/tex] sin ( 2 theta) / g
where
u = initial velocity
theta = angle along the horizontal
g = acceleration due to gravity
if we substitute the value of 15 and 75 in formula , we get
sin ( 2 * theta_1 ) = sin ( 2*15 ) = sin 30 = 1/2
sin ( 2* theta_2 ) = sin ( 2 * 75 ) = sin (150) = 1/2
both the values are coming out to be equal
hence , will have equal value of horizontal range
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you were asked to first measure the time for 20 oscillations, and then find the time for one oscillation. what is the reason we do this? why not simply measure the time for one oscillation directly?
To reduce the uncertainty in the measurement of the period in oscillation.
A mechanical device that oscillates swings from side to side. A peg-and-slot can convert it into a rotary motion (rotating in a circle). The similar technique can be used to convert rotary motion to oscillating motion.
Sine and cosine functions can be used to describe the motion of a simple harmonic oscillating system where the restoring force is directly proportional to that of the displacement and acts in the direction opposite to that of displacement. One illustration is a weight fastened to a spring. The weight is in equilibrium when it is at rest. If the weight is reduced, the mass is subject to a net restoring force (potential energy)
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1. Calculate the current flowing when:
(A) 75 mC pass a point in I min;
(B) 0.5 GC pass a point in 2 hours;
(C) 2.0 MC pass a point in 1000 hours.
2. Calculate the charge flow when the current flow is:
(A) 6.0 A for 5 min;
(B) 250 mA for 4 hours;
(C) 2.5 KA for 50 s.
3. How long does it take for the following to pass a point in the circuit?
(A) 25 MC at a current of 25 mA;
(B) 48 C at a current of 12 A;
(C) 360 C at a current of 4.0 A.
4. A current of 10 cA flows through a resistor of resistance 4.0 ohms
Find the:
(a) P.d across the resistor;
(b) Total charge flow in 3 minutes;
1)The current flowing when:
(A) 75 m C pass a point in I min will be 1.25 * [tex]10^{-3}[/tex] A
B) 0.5 GC pass a point in 2 hours will be 0.5 * [tex]10^{9}[/tex] C
C) 2.0 MC pass a point in 1000 hours will be 2 * [tex]10^{6}[/tex] C
The charge flow when the current flow is:
(A) 6.0 A for 5 min will be 1800 C
B) 250 mA for 4 hours will be 3600 C
C) 2.5 KA for 50 s will be 125 * [tex]10^{3}[/tex] C
3A) [tex]10^{9}[/tex] seconds will it take for pass 25 MC at a current of 25 mA
B) 4 seconds will it take for pass 48 C at a current of 12 A
C) 90 seconds will it take for pass 360 C at a current of 4.0 A
4) A) Potential difference across the resistor will be 0.4 V
B) Total charge flow in 3 minutes will be 18 C
1 )
current = charge / time
A) 75 m C = 75 * [tex]10^{-3}[/tex] C
current = 75 * [tex]10^{-3}[/tex] C / 60 = 1.25 * [tex]10^{-3}[/tex] A
B ) 0.5 GC = 0.5 * [tex]10^{9}[/tex] C
current = 0.5 * [tex]10^{9}[/tex] C / 216000 = 0.0023 * [tex]10^{5}[/tex] =2.3 * [tex]10^{2}[/tex] A
C) 2.0 MC = 2 * [tex]10^{6}[/tex] C
current = 2 * [tex]10^{6}[/tex] / 36 * [tex]10^{5}[/tex] = 0.0556 * 10 A
2) charge = current * time
A) Q 1 = 6 * 300 = 1800 C
B) Q2 = 250 * [tex]10^{-3}[/tex] * 14400 = 3600 C
C) Q3 = 2.5 * [tex]10^{3}[/tex] C * 50 = 125 * [tex]10^{3}[/tex] C
3 )
time = charge / current
A) T1 = 25 * [tex]10^{6}[/tex] / 25 * [tex]10^{-3}[/tex] = [tex]10^{9}[/tex] seconds
B) T2 = 48 / 12 = 4 seconds
C) T3 = 360 / 4 = 90 seconds
4)
a) V = IR ( using ohm's law )
= 0.1 * 4 = 0.4 V
b) charge = current * time
= 0.1 * 180 = 18 C
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Why does the Sun’s altitude affect shadow length?
The size of the shadow hangs on the distance of the source of light and on the angle at which the light rays drop on the object.
Why does the Sun’s altitude affect shadow length?A person or object chunks more light when the sun is low in the sky. More brick light makes shadows longer. Less light is wad when the sun is high in the sky. This makes shadows shorter. The angle at which light hit an object affects the size and shape of its shadow. Shadows are longer when the light source is at a low angle (side on) and squat when the light source is at a higher angle (overhead). find design when investigating how shadows change size and how a shadow is formed understand the role of light-position
So we can conclude that The Sun's position in the sky influences the length of the shadow. When the Sun is low on the horizon, the shadows are long.
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NEED HELP ASAP
What is the acceleration due to gravity on the surface of the planet Pluto if its mass is 1.2 x 10 22 kg and radius is 1.14 x 10 6 m?
9.8 m/s2
6.4 m/s2
0.62 m/s2
0.34 m/s2
The acceleration due to gravity on the surface of planet Pluto is 0.62 m/s²
How to determine the acceleration due to gravityFrom the Newton's law of universal gravity, the acceleration due to gravity is given by:
g = GM / R²
Where
g is acceleration due to gravity M is the mass G is the gravitational constantR is the radius.With the above formula, we can obtain the acceleration due to gravity. Details below
Mass of planet (M) = 1.2×10²² KgRadius (R) = 1.14×10⁶ mGravitational constant (G) = 6.67×10¯¹¹ Nm²/Kg²Acceleration due to gravity (g) =?g = GM / R²
g = (6.67×10¯¹¹ × 1.2×10²²) / (1.14×10⁶)²
g = 0.62 m/s²
Thus, the acceleration due to gravity is 0.62 m/s²
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Use the diagram of the molecular structure of lactic acid to answer the question.
Which functional groups are represented in this molecular structure?
A) a methyl group, a hydroxyl group, and a carboxyl group
B) a sulfhydryl aroup. an amino group, and a carboxvl group
C) a methyl group, an amino group, and a carboxyl group
D) a sulfhydryl aroup, a hydroxvl group, and a carboxvl group
The functional groups that are represented in this molecular structure are; a methyl group, a hydroxyl group, and a carboxyl group
What are the functional groups?We know that the functional group would be defined as that atom, or a group of atoms or even a bond that is the major point where a chemical reaction occurs among the members of a particular hom----ologous series. Note that the hom----ologous series is a family of compounds that differ from each other by chain length only.
Now we have to look at the compound and of course the attachments to the compound would tell us how many of the functional groups that we do have in the molecule and we can take a cursory look at the image attached for this detail.
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a projectile is launched at an angle of 30 above the horizontal from the top of a 10m high cliff, hits the ground below 4 seconds later what is the initial speed of the projectile
The initial speed of the projectile launched at an angle of 30 above the horizontal from the top of a 10m high cliff is 34.2 m / s
According to equations of motion,
s = u t + 1 / 2 at²
s = Displacement
u = Initial velocity
t = Time
a = Acceleration
H = 10 m
t = 4 s
θ = 30°
g = 9.8 m / s²
Here the object is launched art an angle from a height. So,
s = - H = - 10 m
u = uy
While considering vertical motion,
a = - g = - 9.8 m / s²
- H = uy t - 1 / 2 g t²
- 10 = 4 uy - 1 / 2 * 9.8 * 4²
4 uy = 68.4
uy = 17.1 m / s
sin θ = uy / u
u = 17.1 / sin 30°
u = 34.2 m / s
Therefore, the initial speed of the projectile is 34.2 m / s
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Sound cannot travel without medium write on the basis of the following points (materials required) (procedure) (conclusion
Explanation:
Because it is a mechanical wave and it need material medium to travel through it.
A stunt woman of mass mmm falls into a net during the filming of an action movie. She experiences a normal force magnitude {F_n}F
n
F, start subscript, n, end subscript while touching the net.
Which of the following statements is correct for the acceleration magnitude {a}aa of the stunt woman?
Consider upward as the positive direction.
The correct expression for the acceleration magnitude {a}aa of the stunt woman from from the above given task is: m(a + g).
The correct option is b.
The complete image is attached.
Why the acceleration magnitude {a}aa of the stunt woman N is m(a + g)It follows that one of the Newton law motion describes a system that in every action, there is equal and opposite reaction. In order words, no reaction will occur without an action.
That being said, the stunt woman from the above given task possesses a mass m which will ultimately be falling under acceleration due to gravity. This means that the acceleration, a by the process equals gravitational acceleration, g under standard conditions. It is on this premise that her acceleration magnitude {a}aa is given by m(a + g).
In conclusion, we now know from the detailed explanation and image above that the magnitude of the woman is m(a + g).
Complete question:
A stunt woman of mass m falls into a net during the filming of an action movie. She experiences a normal force magnitude {F_n}F
n
F, start subscript, n, end subscript while touching the net.
Which of the following statements is correct for the acceleration magnitude {a}aa of the stunt woman?
Consider upward as the positive direction
a. m(a - g).
b. m(a + g).
c. m(a + g + m)
d. None of the above.
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computerized x-ray imaging in the transverse plane: a.magnetic resonance imaging (mri) b.ultrasonography c.lymphadenectomy d.lymphangiogram e.ct scan
CT scan stands for computerized x-ray imaging in the transverse plane.
What is CT scan?X-rays can flow through it. Images of the body are produced in three planes using magnetic fields and radio waves (coronal, sagittal and axial).Through computer processing, cross-sectional images (slices) of bones, blood arteries, and soft tissues inside your body are produced during a computerized tomography (CT) scan, which combines a number of X-ray images collected from various angles all over your body.The body is divided into superior and inferior halves by an anatomical plane called the transverse plane, also referred to as horizontal plane, axial plane, and transaxial plane.CT images, which are two-dimensional images of three-dimensional physical things, are commonly used. In order to create the photographs, electrical energy (moving electrons) must first be converted into X-ray photons, which must then be passed through an object and detected before being converted back into electrons.To learn more about CT scan refer to :
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224/88 ra —> 4/2he + a/z x
What is the atomic mass of the new atom
What is the atomic number of the new atom
What is the symbol of the new atom
What type of decay is demonstrated here
Atomic mass = 220
Atomic number = 86
symbol = 220/86 x
Alpha decay is demonstrated here
The atomic mass of the new atom = a = 224 - 4 = 220
The Atomic number of the new atom = z = 88 - 2 = 86
Symbol of new atom will be = 220/86 x
A radium nucleus undergoes alpha decay to form a different element and an alpha particle .
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For general projectile motion with no air resistance, the horizontal component of a projectile's acceleration
For general projectile motion with no air resistance, the horizontal component of a projectile's acceleration is: E. is always zero.
What is projectile motion?Projectile motion can be defined as a form of motion which is experienced by a physical object that is projected near planet Earth's surface while moving along a parabolic (u-shaped curve) path, and under the influence of a gravitational force only.
Based on scientific research and records, we can infer and logically deduce that the initial horizontal velocity of an object undergoing a projectile motion is always equal to its final horizontal velocity.
Additionally, the horizontal component of the acceleration of a physical object that is undergoing a projectile motion is always equal to zero (0) meter per seconds square because it is experiencing a constant velocity.
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Complete Question:
For general projectile motion with no air resistance, the horizontal component of a projectile's acceleration
A. remains a non-zero constant
B. continuously decreases
C. continuously increases
D. first decreases and then increases
E. is always zero
PLS ANSWER quicklu thank youu
Answer: 3/4 net decline
(three quarters)
Explanation:
an object undergoing simple harmonic motion takes 0.12 s to travel from one point of zero velocity to the next such point. the distance traveled between those points by the object is 41.6 cm. calculate the period.
The period of the object undergoing simple harmonic motion is
simple harmonic motion sometime shortened as SHM may be a sort of periodic movement where the restoring drive on the moving object is straightforwardly relative to the magnitude of the displacement of the object and acts towards the object's equilibrium position. It comes about in an oscillation that proceeds inconclusively, on the off chance that uninhibited by friction or any other dissemination of energy.
we are given the time taken to complete the distance covered between two zero velocity points apart from the distance of 41.6 cm which is 0.12 so the period will be = 2T = 2 * 0.12 = 0.24 s
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starting from rest, a disk rotates about its central axis with constant angular acceleration. in 5.0 s, it rotates 25 rad. during that time, what are the magnitudes of (a) the angular acceleration and (b) the average angular velocity?
a) The angular acceleration of a disk is 2.0 rad/s².
b) The average angular velocity of the disk is 5 rad/s.
What is angular acceleration?The temporal rate at which angular velocity changes is known as angular acceleration. The standard unit of measurement is radians per second per second.
Rotational acceleration is another name for angular acceleration. It is a numerical representation of the variation in angular velocity over time.
A pseudoscalar, angular acceleration, exists. If the angular speed rises counterclockwise, the sign of angular acceleration is taken to be positive; if it grows clockwise, it is taken to be negative. Angular acceleration is used to study the motion of rotating objects like the wheel, fan, and earth.
Assume that the sense of rotation is positive.
This means that w, α, and other quantities will then be positive also.
a) we know,
25 rad = 1/2 α 5²
α = 2.0 rad/s²
∴ the angular acceleration of a disk is 2.0 rad/s².
b) w avg = Δθ/Δt
w avg = 25rad/5s
w avg = 5rad/s
∴ the average angular velocity of the disk is 5 rad/s.
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What does water's high specific heat capacity explain about water?
A) why water bonds with other molecules
B) why water is often used as a solvent
C) why water is unable to absorb energy
D) why water is liquid at room temperature
Water's high specific heat capacity explains why why water bonds with other molecules.
The correct answer choice is option a.
Why water bonds with other moleculesWater has the ability to easily attract other molecules simply because of the fact its hydrogen and oxygen components is made up of positive and negative ions respectively.
Technically, the bonds in hydrogen possess a form of electrostatic force which makes it very possible for water to bond with other molecules with its high specific heat capacity.
So therefore, we can now confirm and deduce that from the simple note given above that the hydrogen bonds presence in water molecule makes it easy for water to combine with other molecules.
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A brick is thrown upward from the top of a building at an angle of 25 to the horizontal and with an initial speed of 15 m/s. The brick hits the ground after 3.0s of flight.
(a) Calculate the height of the building.
The vertical height of the building is determined as 44.1 m.
What is the height of the building?
The height of the building is calculated by applying the following kinematic equation as shown below.
h = vyt + ¹/₂gt²
where;
vy is the initial vertical velocity of the brickt is the time of motion of the brickh is the height of fall of the brickg is acceleration due to gravityh = (v sinθ)t + ¹/₂gt²
where
θ is the angle of inclination of the velocityThe given parameters include the following;
initial vertical velocity of the brick, vy = 0the time of motion of the brick, t = 3.0 sthe height of fall of the brick, h = ?acceleration due to gravity = 9.8 m/s²h = (0 x sin25)(3) + ¹/₂(9.8)(3²)
h = 44.1 m
Thus, the height of the building is equal to the vertical distance travelled by the brick thrown at the given initial velocity.
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On a wet road, is a higher coefficient of friction on the tires safer or a lower one and pls explain I don’t get it. I would love to make this question worth more points but someone stole all 20 points without helping me, I’m rlly exhausted please help
a small brake light powered by an automotive battery of 12.0 v has a power rating of 30 w. what is the resistance of the brake light in ohms? round your answer to the nearest tenth.
5ohms is the resistance of the brake light in ohms.
What are opposition and an example?Resistance is the degree to which a substance obstructs or opposes an electric current. Electric current is the flow of electrons. To better understand resistance, imagine how difficult it would be for a person to move from one shop to another in a crowded market.
Resistance and formula are what?The following is the equation to use Ohm's Law to compute resistance: R = V I, where R is the resistor's resistance expressed in ohms () and V is the voltage drop expressed in volts.
POWER(watts) = VOLTAGE * AMPERAGE
AMPERAGE = POWER(watts) / VOLTAGE
AMPERAGE = 30/12 = 2.5
RESISTANCE(ohms) = VOLTAGE / AMPERAGE
R = 12/2.5 = 4.8ohms
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your favorite am radio station broadcasts at a frequency of 849 khz using a 521 kw antenna. how many photons per second does this antenna emit?
Number of photons emitted per second are 2928.02×10²⁵
What are photons?Photons, also called light quanta, are small energy packages of electromagnetic radiation. Photon energy depends on the frequency of the radiation. There are photons of all energies, from high-energy gamma rays and x-rays to visible light, low-energy infrared and radio waves. All photons travel at the speed of light. A photon, considered among sub-atomic particles, is a boson with no charge, no rest mass, and no spin unit. They are field particles that are thought to be carriers of the electromagnetic field.
For the given question:
Number of photons = power/energy
n = P/E
Power = 521 KW
Since energy is not given, we need to calculate it,
Using, E = h × f
Where, h = plank's constant (6.62607015×10⁻³⁴ J-Hz⁻¹)
f = frequency (849×10³ Hz)
Substitute the values in the equation for calculation of energy:
E = h × f
E = 6.62×10⁻³⁴ × 849×10³
E = 5620.38×10⁻³¹ J
E = 5.62×10⁻²⁸ J
Now, for number of photon:
n = P/E
n = 521×10³/5.62×10⁻²⁸
n = 2928.02×10²⁵ photons
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should the speed at which a magnet is moved through a coil of wire affect the measured peak voltage across the coil? if so, how?
Yes it will affect the number of magnetic field lines travelling through the coil changes when the magnet is moved inside a coil of wire.
How is the first law of Faraday formulated?
The first and second laws of electrolysis by Faraday, which are as follows, govern the electrolysis process: The charge (mQ m Q) has a direct relationship with the mass of material liberated (or deposited).
According to Faraday, the variation in the number of field lines traversing the wire coil is what creates the induced electromagnetic field (EMF) in the loop. The rate of change in the number of magnetic field lines that pass through the loop, in particular, is what determines the induced emf. The term "magnetic flux" is similar to the term "electric flux," and it refers to the number of field lines that are passing through a surface.
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a merry-go-round with a radius of 1.5 m is spinning at 2.0 rad/s when a young girl pushes on it for 5.0 revolutions applying an acceleration of 3.0 rad/s2. what is the final angular velocity of the merry-go-round?
The final angular velocity of the merry-go-round is 8 rad/s.
The radius of the Merry-go-round is 1.5 m and it is spinning with a speed of 2rad/s the girl pushes on it for 5 revolutions which applies and acceleration of 3rad/s².
The final angular velocity of the merry-go-round can be given by the equation,
W'² - W² = 2AS
Where,
W' is the final angular velocity,
W is the initial angular velocity,
A is the angular acceleration,
S is the angular displacement which is 10 rad in this case.
Putting values,
W'² - (2)² = 2(10)(3)
W' = 8rad/s.
So, the final angular velocity is 8rad/s.
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2.10-kg block of wood is attached to a spring with a spring constant of 150 n/m. the block is free to slide on a horizontal frictionless surface once the spring is stretched and released. a 1.00-kg block of wood rests on top of the first block. the coefficient of static friction between the two blocks of wood is 0.450. what is the maximum speed that this
Knowing the kinetic static force coefficient.
What is oscillation ?
Oscillation is the process by which a quantity or measure varies in time around its equilibrium value. Another definition of oscillation is the periodic variation of a substance between two values or around its central value.
What is kinetic force?
A force that acts between moving surfaces is referred to as "kinetic friction." A force acting in opposition to the direction of a moving body on the surface is felt. The two materials' coefficients of kinetic friction will determine how much force is applied.
For both blocks to oscillate together w^2=K/((M+M))
Maximum accelartion =a_(n= w^2 ) A= K/((M+M))A
For ⏊ kg block, μmg = 〖ma〗(n= ) μg
μg =K/((M+M))A
= 0.45×9.8 = 150/((2.1+1)) A
A=0.0914m
Max speed, vm=wA= √(k/(M+M)) A
=√(150/((2.1+1))) × 0.0914
= v(m=) 0.636 m/s
Therefore, the maximum speed is 0.636 m/s.
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a rotating wheel requires s to rotate revolutions. its angular velocity at the end of the -s interval is rad/s. what is the constant angular acceleration (in ) of the wheel?
The angular acceleration of the wheel is -20.25 rad/sec^2
Angular acceleration is defined as the rate of change of angular velocity over time.
It is usually expressed in radians per second.It is also known as rotational acceleration.Mathematically, θ = ωo t + 1/2*α*t^2so, α = 2*(θ - ωo t ) / t^2
angular velocity of the wheel = ωo = 96.0 rad/sec
time taken by the wheel to rotate = t = 7 sec
angular distance travelled by the wheel = θ 28 rev
As we know that,
In one revolution the wheel completes 360 degrees which is equals to 6.28319 rad
therefore angular distance traveled = 28 rev * 6.28319 rad
So, the angular acceleration = 2*(28*6.28 - 96*7) / 7^2 = -20.25 rad/sec^2
The question is incomplete, the complete question is 'A rotating wheel requires 7.00 s to rotate 28.0 revolutions. its angular velocity at the end of the 7.00-s interval is 96.0 rad/s. what is the constant angular acceleration (in rad/s) of the wheel?'
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a sample of gas is confined in a cylinder with a moveable piston of mass m that is initially held fixed. there is a block of mass 2m on top of the piston, as shown in the figure. a free-body diagram for the block is also shown, which includes the normal force fn exerted on the block by the piston and the weight wb of the block. the upward force that the gas exerts on the piston has magnitude fgas. what is the acceleration of the block immediately after the piston is released?
To draw a free body diagram, draw the object of interest, plot all the forces acting on it, and decompose all force vectors into their x and y components.
A separate free body diagram must be drawn for each object in question. There are not always four forces acting on an object. The number of forces represented in the free body diagram can be one, two, or three. External forces acting on an object include friction, gravity, normal forces, drag, tension, or human force by pushing or pulling. In non-inertial frames (see Frames below), conceptual forces such as centrifugal pseudo-forces are appropriate.
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4. [4 pts] to decrease the magnitude of current induced in the inductor using a bar magnet, you could (select all that apply): a. decrease the strength of the magnet. b. increase the velocity of the magnet going into the solenoid. c. decrease the number of coils in the solenoid. d. decrease the cross sectional area of the solenoid.
Option A,C It decrease the strength of the magnet and also decrease the number of coils in the solenoid.
A device called a solenoid is made up of a casing, a coil of wire, and a moving plunger (armature). A magnetic field develops around the coil when an electrical current is injected, drawing the plunger in. A solenoid, put more plainly, changes electrical energy into mechanical work.
Copper wire is twisted tightly in a coil that has several turns. The creation of a powerful magnetic field or flux occurs when an electrical current runs through this wire.
The coil is enclosed in a housing, which is often composed of steel or iron, which concentrates the magnetic field it produces.
The magnetic field's concentration, which provides the mechanical force needed to perform the action, draws the plunger to the stop.
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a) what is the water pressure as it exits into the air? b) what is the height, h of the standing column of water?
The water pressure as it exits into the air is P2 = Patoms
b) The height, h of the standing column of water is 4.6m
By Bernoulli's principle,
p1 - p2 = ρgh
h = 45 × [tex]10^{3}[/tex] / 1000 × 9.8
h = 4.6m
The relationship between a fluid's speed and pressure is described by Bernoulli's principle, which at first glance seems paradoxical. Many people think that Bernoulli's principle shouldn't be true, but this may be because they don't grasp what Bernoulli's principle actually states. According to Bernoulli's principle, which is stated below: Higher fluid velocity sites will experience less pressure than slower fluid velocity points inside a horizontal fluid flow. Thus, in a horizontal water pipe with a variable diameter, areas of fast-moving water will experience lower water pressure than areas of slow-moving water Since many individuals equate high speeds with high pressures, this may seem paradoxical to them. However, we'll demonstrate in the following section that this is really another way of expressing that water will accelerate if there is greater pressure behind it than in front of it. We will explain how Bernoulli's concept came to be, illustrate it in greater detail, and attempt to lessen its mystique in the part that follows.
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Which of acceleration, age, speed, temperature, and velocity are vector quantities?.
Speed, temperature, and age are not vector numbers, whereas velocity and acceleration are vector quantities.
Define vector quantity.Vector is quantity has both magnitude and direction. It is represented by an arrow whose length is proportional to the quantity's magnitude and whose direction is the same as the quantity.
While a vector lacks position, it does have magnitude and direction. Since they have a magnitude and a direction, velocity and acceleration are both vector quantities.
An object is accelerating if its speed doesn't change but its direction does. It's critical to keep in mind that acceleration and velocity don't necessarily follow the same path.
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forces and newton’s laws 3.1 Essential Questions How are force and motion related?
According to Newton's law of motion, the direction of motion of an object depends on the direction of the applied force.
What is Newton's first law of motion?
Newton's first law of motion states that an object at rest or uniform motion in a straight line will continue in that path unless acted upon by an external force and it will move in the direction of the applied force.
The Newton's first law of motion is also called the law of inertia because it depends on the mass of the object. The more massive an object is, the more inertia the object will possess and vice versa.
Also, the Newton's second law of motion states that the force acting on an object is directly proportional to the product of mass and acceleration of the object.
Mathematically, Newton's second law of motion is given as;
F = ma
F = mv/t
Ft = mv
This law (Newton's second law of motion) is also states that the force applied on an object directly proportional to the rate of change of momentum of the object.
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An 800-kg car traveling in a straight line at a speed of 30 m/s applies its brakes. During braking, there is a net force of 2000 N in the horizontal direction on the car. What distance will the car move from the time it applies its brakes until it has stopped?
a.12
b.75
c.180
d.300
e.60000
Answer:
Explanation:
c = 180
i have same problem and it work
a digital thermometer can make readings to the tenth of a degree at either the celsius setting or the fahrenheit setting. which reading would be more precise?
The Fahrenheit setting, since 1 degree Fahrenheit is smaller than 1 degree Celsius.
For general use, a straightforward formula exists to convert temperatures from Fahrenheit to Celsius. Just subtract 30 from the Fahrenheit value, and then divide that result in half.
Most objects we measure including length, width, time, and other dimensions—have one thing in common: their values all begin at zero. Zero of any of those units may be converted into another sort of unit quite easily because we all know exactly how long zero centimeters or inches are. Inches, metres, and centimetres all equal zero. As an illustration, let's use inches and centimetres. To move from 0 inches to 1 inch, we need to add 1 inch. This much is clear.
Similarly, we just need to add 1 centimetre to go from 0 centimetres to 1 centimetre. The quantity of space we are adding is the only distinction between adding one inch or one centimetre. One inch is 2.54 centimeters, according to the connection between the two units.
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