When the ball is thrown up in the air, it is called a Freefall motion.
In freefall motion, the acceleration remains constant at all times because the acceleration due to gravity is always constant.
The acceleration due to gravity is 9.81 m/s^2
The ball has zero velocity (not acceleration) at the maximum height.
Therefore, the correct answer is option C
"Its acceleration is the same at all points of motion".
Please help me
how law of motion applied in basketball need step by step explain
Answer:
- Assume a player s meters dunks a ball at an angle theta at an initial velocity Vo, through a net h meters from the ground.
- From Newton's first law of motion; a body remains in its state of motion unless acted upon by an external force.
[tex]{ \rm{v = u + at}}[/tex]
- Since it undergoes projectile motion, there is both vertical and horizontal motion;
Vertical motion:
[tex]{ \rm{v _{y} = u _{y} - gt }} \\ { \rm{v \sin( \theta) = u \sin( \theta) - gt }}[/tex]
- To find the vertical displacement moved by the ball. Let H be the vertical displacement moved by the ball
[tex]{ \rm{H =( u \sin( \theta) - \frac{1}{2} g {t}^{2} ) + h}} \\ \\ { \rm{}}[/tex]
Horizontal motion (g = 0);
[tex]{ \rm{v _{x} = u _{x} }} \\ \\ { \rm{s = u \cos( \theta) t}}[/tex]
A 2.00 kg solid sphere (I = 2/5 MR2) with a diameter of 50.0 cm is rotating at an angular velocity of 5.0 rad/s. The angular momentum of the rotating sphere is
m = mass = 2kg
Diameter = 50 cm
radius= diameter /2= 50/2 = 25cm = 0.25m
w= angular velocity = 5 rad/s
L= I x W
I =2/5 * m*r^2 = 2/5 * 2 * 0.25^2 = 0.05 kgm^2
L= I x W = 0.05 * 5 = 0.25 kgm^2 / s
The half-life of Carbon-14 is 5700 years. If we start with 64 g of this
isotope, how many years would pass before the amount is reduced to 1 gram?
The Carbon 14 isotope will take 34200 years to reduce to 1 gram if the half-life of the isotope is 5700 years.
Half-life is the amount of time it takes an unstable isotope to decay to half of its initial value. It is identified as [tex]t_{1/2}[/tex].
Applying, the half-life formula:
A = A'( [tex]2^{x/y}[/tex] )
Where A is the original mass of Carbon-14, A' is the final mass of carbon-14 after decaying, x is the total time, and y is the half-life.
We have,
A = 64 g, A' = 1 g, y = 5700 years.
Substitute these values in the equation,
A = A'( [tex]2^{x/y}[/tex] )
64 = 1 ( [tex]2^{x/5700}[/tex])
64 = [tex]2^{x/5700}[/tex]
[tex]2^{x/5700}[/tex] = 2⁶
Therefore,
x/5700 ≈ 6
Multiplying each side of the equation by 5700
x ≈ 6 × 5700
x ≈ 34200 years
Hence, it will take 34200 years for the isotope to reduce to 1 gram.
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Question 1
Thallium-208 has a half-life of 3.00 minutes. How much of 80.0 g sample of Thallium-208 has decayed (no longer radioactive) after 12 minutes?
75,0 g
5.0 g
10.0 g
40,0 g
Answer:
Explanation:
Given:
T = 3.00 min
t = 12 min
m₀ = 80.0 g
____________
m - ?
The Law of radioactive decay:
m = m₀·2^(-t/T)
n = (t/T) = 12 / 3.00 = 4
m = m₀ / 2ⁿ
m = 80 / 2⁴ = 80 / 16 = 5 g
How does the release of energy during fusion provide evidence of mass-energy equivalence?
The release of energy during fusion because the mass of the resulting single nucleus is smaller than the combined mass of the two initial nuclei, the process produces energy. Remaining mass is converted to energy.
what is Nuclear fusion?
A reaction known as nuclear fusion occurs when two or more atomic nuclei fuse to create new atomic and subatomic particles.
Mass energy equivalence describes the relation between mass and energy when system is in rest frame. According to Einstein's equation, mass and energy can be transformed into one another (E=mc2).
when energy is lost the mass of the system will also decrease in proportion. The energy and mass can be discharged into the environment as heat energy or radiant energy like light.
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This means that the release of energy from a nuclear reaction creates enough of a mass difference to be measured.
Mass-Energy EquivalenceAccording to mass-energy equivalence, mass is merely concentrated energy. The formula E=mc2 was created by Albert Einstein for his special relativity theory. Mass contains a huge quantity of energy. The energy in a 20g marble is equivalent to a 500 kiloton hydrogen bomb, but it is incredibly difficult to unleash. When matter and antimatter come together, a process known as matter-antimatter annihilation, it can be liberated. Because of the changes in mass, it is evident why nuclear processes produce so much more energy than chemical ones.To learn more about Mass-Energy Equivalence refer:
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You pour yourself a cold glass (m = 0.6 kg) of ice tea (m = 1.2 kg) on a hot summer day andaccidently leave it in the sun, which causes both the tea and the glass to warm up to atemperature of 19°C. You want to bring it down both down to a nice cold 1°C before you drinkit. What mass of ice at -15°C do you need to add to the system to cool it down? Assume, thespecific heat of water and tea is 4186 J/kg°C, the specific heat of the cup is 837 J/kg°C, thespecific of ice is 2090 J/kg°C, and the latent heat of fusion for ice to water is 3.34 x 105 J/kg.
ANSWER
[tex]\begin{equation*} 0.269kg=269g \end{equation*}[/tex]EXPLANATION
Parameters given:
Mass of glass, mg = 0.6 kg
Mass of ice tea, mt = 1.2 kg
Temperature of tea and glass = Tg = Tt = T1 = 19°C
Required temperature, T2 = 1°C
Temperature of ice, Ti = -15°C
The sum of the heat lost by the glass and the heat lost by the tea must be equal to the heat gained by the ice:
[tex]m_gc_g(T_1-T_2)+m_tc_t(T_1-T_2)=H_i[/tex]where cg = specific heat of the cup.
ct = specific heat capacity of the tea
Hi = heat gained by ice
The heat gained by ice is given as the sum of the heat gained to convert the ice to ice at 0°C, the heat gained to convert the ice at 0°C to water at 0°C and the heat gained to convert water at 0°C to water at 1°C:
[tex]H_i=mc_i(T_0-T_{-15})+mL_f+mc_w(T_1-T_0)_[/tex]where ci = specific heat capacity of ice
Lf = latent heat of fusion of ice
Therefore, we can substitute this into the original formula:
[tex]m_gc_g(T_1-T_2)+m_tc_t(T_1-T_2)=mc_i(T_0-T_{-15})+mL_f+mc_w(T_1-T_0)_[/tex]Solving for m in the equation above, the mass of ice needed is:
[tex]\begin{gathered} (0.6*837*(19-1))+(1.2*4186*(19-1))=(m*2090*(0-(-15)))+(m*33400)+(m*4186*(1-0)) \\ \\ 9039.6+90417.6=31350m+334000m+4186m \\ \\ 99457.2=369536m \\ \\ m=\frac{99457.2}{369536} \\ \\ m=0.269kg=269g \end{gathered}[/tex]That is the mass of ice needed.
What is the speed of each ball when they are each 4.10 m above the ground?
ANSWER:
12.3 m/s
STEP-BY-STEP EXPLANATION:
The vertical speed can be calculated by means of the following equation:
[tex]v^2_{^{}y}=u^2_y+2\cdot a\cdot s[/tex]The speed in both cases is the same, since the angle remains the same.
We can calculate the initial speed in y since we know the angle, the value s would be the height, therefore, we substitute and calculate the final speed in y:
[tex]\begin{gathered} v^2_y=(11\cdot\sin 50)^2+2\cdot(-9.8)\cdot(-4.1) \\ v^2_y=151.36 \\ v_y=\sqrt[]{151.36} \\ v_y=12.3\text{ m/s} \end{gathered}[/tex]The speed would be 12.3 m/s in both cases
four rivers have the same volume of water flow over time but fall from the different heights to power hydroelectric dams. which dam would provide most hydroelectric power?
A. dam c: fall height of 135 feet
B. dam B: fall height of 75 feet
C. dam A: fall height of 175 feet
D. dam D: fall height of 100 feet
Answer:
I thibknits 175
Explanation: It's the furthest
Two forces F1 = -7.50i + 4.90j and F2 = 8.20i + 3.50j are acting on an object with a mass of m = 2.70 kg. The forces are measured in newtons, i and j are the unit vectors. What is the magnitude of the object's acceleration?
The magnitude of the object's acceleration is determined as 3.12 m/s².
What is the resultant force on the object?The magnitude of resultant force acting on the object is calculated as follows;
F = √[(x₁i + x₂i)² + (y₁j + y₂j)²]
where;
x₁i is the initial force in x-directionx₂i is the final force in x-directiony₁j is the initial force in y-directiony₂j is the final force in y-directionF = √[(-7.5 + 8.2)² + (4.9 + 3.5)²]
F = 8.43 N
The magnitude of the object's acceleration is calculated by applying Newton's second law of motion as follows;
F = ma
a = F/m
where;
F is the applied force on the objectm is the mass of the objecta is the acceleration of the objecta = (8.43) / (2.7)
a = 3.12 m/s²
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An object is undergoing SHM with a frequency of 4 Hz and amplitude 1.8 cm. How long does it take the part togo from O to -1.8 cm?
Frequency= f = 4Hz
Amplitude = A = 1.8 cm
x= 0 , x= -1.8 cm
Apply:
frequency = 1 / time period
f = 1 / T
T = 1/f = 1 / 4 = 0.25 s
Time to complete one cycle = 0.25 s
To reach -1.8 cm:
t = T/4
t = 0.25 / 4 = 0.0625 s
Answer: 0.0625 s
4. A patient must take 200 milligrams of medication with each meal. If 1 milliliter ofliquid contains 25 milligrams of medication, how many milliliters of medication shouldthe patient take each day? Assume that the patient eats 3 meals per day.
To determine how many milliliters the patient need each meal we can use a rule of three:
[tex]\begin{gathered} 1\text{ mL}\rightarrow25\text{ mg} \\ x\rightarrow200\text{ mg} \end{gathered}[/tex]then:
[tex]x=\frac{200\cdot1}{25}=8[/tex]Hence the patient need 8 mL each meal; since the patient eats three meals per day he needs a total 24 mL per day of the medication.
A 12.0 kg bucket is lowered vertically by a rope in which there is 163 N of tension at a given instant. Is the acceleration up or down?
My question here is that if the bucket is being lowered, isn't the acceleration already down? So why does the answer say that the acceleration is up?
Answer:
up
Explanation:
If not moving then tension would be 12.0 * 9.81 = 117.7 N
More N means going up Less N means going down
Going UP
Answer:
Explanation:
Given:
m = 12.0 kg
T = 163 N
g = 9.8 m/s²
___________
a - ?
Resting bucket weight:
P = m*g = 12.8*9.8 ≈ 125 Н
P < T (125 < 163),
This means that the bucket is being lifted with acceleration upwards!
T = m*(g + a)
(g + a) = T / m
a =T / m - g
a = 163 / 12.0 - 9.8 ≈ 3.8 m/s²
Question 4
When the results of an experiment support your hypothesis, this means that your
hypothesis has been proven to be true.
True
False
When the results of an experiment support your hypothesis, this means that your hypothesis has been proven to be true. the statement is True.
What is hypothesis?A hypothesis is a proposed explanation of a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that it can be tested. Scientists usually base scientific hypotheses on past observations that cannot be satisfactorily explained by existing scientific theories.
The characteristics of a hypothesis are as follows:
A hypothesis must be clear and precise to be considered reliable. If the hypothesis is a relational hypothesis, it should express the relationship between the variables. The hypothesis must be specific and have room for more tests. The explanation of the hypothesis must be very simple, and it must also be understood that the simplicity of the hypothesis is not related to its meaning.To learn more about hypothesis, refer;
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When there is an angle between the force and the displacement, W = F·d cos θ. Is this true or false?
Take into account that the work done by the force F can be written as follow:
[tex]\vec{W}=\vec{F}\cdot\vec{d}[/tex]Consider that for a dot product between vectors you have:
[tex]\vec{F}\cdot\vec{d}=Fd\cos \theta[/tex]where θ is the angle in between the vectors F and d.
Then, related to the given statemen, it is true that angle θ is the angle between force and displacement.
AWNSER!!!!!!!!!!!!!!!!!!!!!!! HELP HELP HELP HELP HELP HELP! Determine the gravitational potential energy of a 7.5-N object ready to fall from a height of 5 m. Show your work.
Answer: 7.5x5 =37.5
Answer:
7.5×3.5=37.5
Explanation:
Gravitational potential energy= mgh (mass × gravitational field strength × height)
So the formula mg gives you weight so we can write it as weight × height)
weight and force is same thing so both units are Newton. Please note that gravitational field strength is constant and its value is 10
Answer:
The correct answer would be :
7.5×3.5=37.5
Explanation:
This is because the gravitational potential energy= mgh
So this formula of mg gives us the weight so we can then write this as
(weight × height)
weight and force is same thing so both units are Newton. Please note that gravitational field strength is constant and its value is 10
Explanation:
Have a great day/week.
999A motorist drives north for 36.0 minutes at 65.5 km/h and then stops for 15.0 minutes. He then continues north, traveling 130 km in 2.30 h.(a) What is his total displacement?_____ km(b) What is his average velocity?_____ km/h
1. Using the values of acceleration calculate Usain’s greatest and least net forces.Average Acceleration(m/s/s)02.84.861.120.60.510.180.19-0.18-0.180
Given:
mass of the usain is
[tex]m=94\text{ kg}[/tex]Acceleration is given as
[tex]a=0,\text{ 2.8, 4.86, 1.12, 0.6, 0.51, 0.18 0.19, -0.18, 0}[/tex]Required: calculate the greatest and least net forces.
Explanation:
we know the force is given as
[tex]F=ma[/tex]where m is the mass and a is the acceleration
to calculate the greatest force
we need find the greatest acceleration in the given table that is
[tex]a=4.86\text{ m/s}^2[/tex]plugging all the values in the above relation we get:
[tex]\begin{gathered} F=ma \\ F=94\text{ kg}\times4.86\text{ m/s}^2 \\ F=456.84\text{ N} \end{gathered}[/tex]now, to calculate the least force we have the find the least acceleration
that is
[tex]a=0\text{ m/s}^2[/tex]plugging all the values in the above relation, we get:
[tex]\begin{gathered} F=ma \\ F=94\text{ kg}^\times0 \\ F=0 \end{gathered}[/tex]so least force is zero.
we can se another least force when the acceleration is negative that is
[tex]a=-0.18\text{ m/s}^2[/tex]then force is
[tex]\begin{gathered} F=ma \\ F=94\text{ kg}\times-0.18\text{ m/s}^2 \\ F=-16.92\text{ N} \end{gathered}[/tex]Thus. the greatest force is
[tex]\begin{equation*} 456.84\text{ N} \end{equation*}[/tex]and least force is
[tex]-16.92\text{ N}[/tex]Draw a supply graph for pizzas. Show what would happen to the supply of pizzas if two more pizzerias open up in town. Identify the determinant of supply that caused the shift.
The supply curve will move to the correct, demonstrating an increment within the add-up to the amount of pizza as of now on the advertisement, in case two or more pizzerias open within the community.
To encourage data on the important picture, see the subtle elements underneath and the attachment.
The add up to several items and administrations that businesses in a country's economy point to offer inside a particular time outline is known as total supply, too known as residential last supply in economics.
It is the overall number of merchandise and administrations that businesses in an economy are arranged and able to offer for sale at a particular cost point.
A alter in supply is characterized as a move to the cleared out or right within the general price-quantity relationship that shapes a supply shift. A alter in supply is characterized as a move to the cleared out or right within the general price-quantity relationship that shapes a supply bend.
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Which term describes the adaptation of cells, organs, or organ systems for a specific function?
The organ system is made to connect with the organ and it does the job for the organ by the connection.
What is organ system?
An organ is a group of tissues that work together for the overall function of the organ, and an organ i hain system is a group of organs are that work together to the perform a specific function. The human organism of consists of eleven organ system.
An organ system is a group of the organs that work together in the body to perform a complex function, such as the pumping blood or the processing and utilizing the nutrients. There are 11 of major organ systems in the human body: The circulatory system. The lymphatic system. In The respiratory system.
Cell can adapt themselves by undergoing 5 different condition
-hyperplasia
-hypertrophy
-atrophy
-metaplsia
-dysplasia
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how can empiricism assist you as a teacher to achieve your goals in a classroom
Empiricism is the notion that all ideas are derived from experience, that all ideas may be relevant or are about experiences, or that all prepositions and beliefs that are seen to be reasonable are known or justified largely by experience. The main function of experience is explained by empiricism. Empiricism maintains that experience serves as the foundation for all knowledge.
Empiricism plays a major role in the psychological history of America and Britain. Psychology is unjustified in light of human-made scientific knowledge. Empiricism was a key component of ancient, medieval, and contemporary philosophy. The popular sense of the day seemed to be empiricist (Britannica). Empiricism was seen to be a crucial force resisting the pretense of speculative rationalist philosophy. Even if they accepted the majority of the significant information that was nonempirical, most medieval philosophers adopted the empiricist approach, at least in terms of concepts.
Empiricism, therefore, takes on many forms. Their relaxation is the major factor that separates them. According to the widely accepted explanation, people's perceptions of their physical environment are influenced by their experiences. According to the phenomenalist interpretation, assistance merely benefits a person's sensory experience.
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Find the answer to the problem
When F1 that is given 21 N and mass of the box is 2.8 kg then F2 is calculated to be 12.32 N
Newton's second law states that the force acting on an object is equal to the mass of an object times its acceleration. This means the more mass of an object, the more force is needed to accelerate it. Greater the force, the greater is the acceleration of the object.
It is given as : F=ma
where 'm' is the mass and 'a' is acceleration.
Given mass = 2.8 kg and F1= 21N
a= 3.1 m/s^2
When two forces are in the opposite directions the net force is the difference between them.
F1 - F2 = m* a
21 - F2 = 2.8* 3.1
21 - F2 = 11.78
F2= 21 - 11.78
= 9.22 N
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A roller coaster has 658J of energy at the bottom of a loop. How much energy does the roller coaster have at the top of the loop, assuming no friction
The energy of the roller coaster at the bottom of the loop is given as
E = 658 J.
This is the kinetic energy of the roller coaster.
Due to this kinetic energy, the roller coaster starts moving upwards.
With the increasing height of the roller coaster, potential energy increases and kinetic energy decreases.
Thus, at the top of the loop, the roller coaster has only potential energy.
According to the conservation of energy,
[tex]\begin{gathered} \text{Energy at the bottom of the loop = Energy at the top of the loop} \\ E=\text{ 658 J} \end{gathered}[/tex]Thus, the answer is 658 J.
A car travels 50. meters due north in 15
seconds. Then the car turns around and
travels 20. meters due south in 5.0
seconds. What is the magnitude of the
average velocity of the car during this
20. second interval? [2]
The average velocity of the car during this 20 sec interval is 1.5 m/s.
Given that,
A car travels 50 metres due north in 15 seconds then car turns around the and travels 20 metres due south in 5 second.
To find :
The magnitude of the average velocity of the car during this 20 seconds interval.
Initial velocity
u = 50 metres/15 = 3.33 m/s
Final velocity
v = 20 metres/5 = 4 m/s
Displacement of car is
Displacement = 50 - 20 = 30 metres
Let V is the velocity of the car during this 20 sec interval. We know that the average velocity is given by :
V = d/t
V = 30 metres/20 = 1.5 m/s
So, the average velocity of the car during this 20 sec interval is 1.5 m/s.
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What is the pH and pOH of number 4 a-d
The pH and pOH of [H+] are 4 and 10 respectively.
a. [H+] = 1.0 × 10⁻⁴ M = 4
b. [H+] = 7.9 × 10⁻⁶ M = 6 - log 7.9 = 5.1
c. [OH⁻] = 1.0 × 10⁻² M = 14 - 2 = 12
d. [OH⁻] = 2.3 × 10⁻⁸ M = 14 - 8 - log 2.3 = 6.36
PH, traditionally denoting "ability of hydrogen", is a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions are measured to have decreased pH values than simple or alkaline solutions.
PH is a degree of the way acidic/primary water is. The variety goes from zero - 14, with 7 being neutral. pHs of less than 7 suggest acidity, whereas a pH of greater than 7 indicates a base. pH is virtually a degree of the relative amount of free hydrogen and hydroxyl ions inside the water.
Whilst the pH scale generally runs from 0 to fourteen, it's far truly feasible to calculate a negative pH. A bad pH happens when the molarity of hydrogen ions in a strong acid is more than 1 N (Normality).
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Someone stands at the edge of a cliff 15 m high. He drops a ball. How fast is the ball moving at the foot of the cliff, just before it hits the ground?
Now the person throws the ball at an angle of 43.6978° to the horizontal, at 5.0 m/s. The ball lands at the foot of the cliff after it moves in a parabolic path. How fast is the ball moving when it hits the ground at the foot of the cliff?
The final velocity of the ball when it falls from the 15 m high cliff is 17.15 m/s.
The final velocity of the ball when it is projected at an initial velocity of 5 m/s at 43.6978° to the horizontal is 17.5 m/s.
What is the final velocity of the ball?
The final velocity of the ball when it falls from the 15 m high cliff is calculated as follows;
v² = u² + 2gh
where;
v is the final velocityu is the initial velocity = 0g is the acceleration due to gravityh is height of fallv² = 0² + 2gh
v² = 2gh
v = √2gh
v = √(2 x 9.8 x 15)
v = 17.15 m/s
The final velocity of the ball when it is projected at an initial velocity of 5 m/s at 43.6978° to the horizontal.
v² = (5 sin43.6978)² + 2(9.8)(15)
v² = 305.93
v = √305.93
v = 17.5 m/s
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When either low-mass or high-mass main sequence stars run out of hydrogen in the core, thecore will contain
To find
When either low-mass or high-mass main sequence stars run out of hydrogen in the core, the
core will contain
Explanation
When either low-mass or high-mass main sequence stars run out of hydrogen in the core, the
core will contain helium
Conclusion
The core will contain helium
In an electric breakdown in air (a spark), an electron (inertia 9.11 × 10 −31 kg ) experiences an electric force of 4.99 × 10 −13 N .What is the electron's acceleration?
The electron's acceleration is 5.302x10¹⁷m/s²
What is electron's acceleration?
Considered is the acceleration of electrons in a plasma by a strong electromagnetic wave that strikes the surrounding magnetic field at an angle. It is demonstrated that there is a wave amplitude threshold that causes stochasticity. Although significant acceleration is possible below this threshold, it is restricted to a single resonance's trapping breadth. The electrons can accelerate from resonance to resonance above the threshold. It is further demonstrated that the Hamiltonian surfaces defining the interaction between waves and particles are topologically open when the parallel phase velocity of electromagnetic waves is supraluminous. In this situation, electrons acquire a lot of energy. The mechanism is appropriate for use in space applications since it is quite resilient and only slightly sensitive to changes in the wave parameters and the beginning energy of the electron.
Applying Newton's law of motion:
F = ma
⇒a = F/m
⇒a=4.83x10⁻¹³/9.11x10⁻¹³
⇒a=5.302x10¹⁷m/s²
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Lesson 10
Write an expository essay explaining how force is related to each of the following essential content points.
*gravity
*air resistance
*inertia
*acceleration
*transfer of momentum
Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.
Air resistance is a force that is caused by air. The force acts in the opposite direction to an object moving through the air.
Inertia means an object will continue its current motion until some force causes its speed or direction to change.
Acceleration is the rate of change of velocity per unit time. It is vector quantity and its S.I. unit is m/[tex]s^{2}[/tex].
Transfer of momentum is the amount of momentum transferred from one particle to another during particle collision or interaction. This phenomenon can be utilized in various areas of physics and optics including condensed matter physics and diffraction on the atomic scale.
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Analysis of data: Answer the following using the equation Force = Mass x
Acceleration:
1. The cruise control feature on most cars allows the engine to provide just the right amount of
force to maintain a constant speed. If the engine is applying force to the mass of the car, why
doesn't the car accelerate?
17
The car does not accelerate because the force of the engine is equal to the force of friction.
What is force?
A force is an effect that can modify the velocity of an item in physics. A force can cause a mass object to change its velocity (e.g., moving from rest), i.e., to accelerate. Intuitively, force can be described as a push or a pull. A force is a vector quantity since it has both magnitude and direction. It is measured in newtons, the SI unit of mass (N). The sign F represents force (formerly P).
Newton's second law, in its original form, states that the net force acting on an object is equal to the rate at which its momentum varies with time.
The force of the engine is equal to the force of friction and the force of gravity. The car does not accelerate because these forces are balanced.
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Lesson 9 Intro . to Motion
Write a compare and contrast essay addressing these essential content points.
*Compare and contrast speed, velocity, and acceleration.
*List the SI units for speed, velocity, and acceleration.
Speed is the total distance covered by a given time or rate of change of distance per unit time is called speed. It is scalar quantity and its S.I. unit is m/s.
Velocity is the displacement covered in a given time or rate of change of displacement per unit time is called velocity. It is vector quantity and its S.I. unit is m/s.
Acceleration is the rate of change of velocity per unit time. It is vector quantity and its S.I. unit is m/[tex]s^{2}[/tex].
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