a particle moves in a straight line, parallel to the x axis, from xi to xf. it is acted upon by a force that is also parallel to the x axis and is giv

Density and refractive index are class characteristics and match does not meet the criteria for individualizing glass fragment to a common source is true.

The only way to individualize glass fragments at a crime scene to a single source is to assemble the fragments and physically fit them together just like a jigsaw puzzle.

Glass is physical and class evidence. Glass can be considered as an individual evidence if the pieces of broken glass can be reassembled & can help in identifying location, sequence of events & object identity

Forensic glass samples can be analyzed by comparing refractive index of the sample to the possible source.

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Amplitude of wave at power of 50 W is 7.07 cm and the average power of the wave after increasing the temperature 8 times the initial power.

(a) Length of the string (l) = 8 m

Mass of the string (m) = 6 g

Wavelength of the string (λ) = 0.2 m

Wave speed (v) = 30 m/s

Average power (P) = 50 W

Mass per unit length (μ) = (6 × 10⁻³ ) / 8 = S  ×  v

Angular speed (ω) =  2 × π × f

= (2 × π × v ) / λ

= (2 × π × 30) / 0.2

Now, Average power (P) = (1/2) ×  ρ × ω² × A² × S × v,

Thus, Amplitude (A) =

= (1/ω)  × √((2 × P)/  (ρ × μ))

= A = [ (0.2) / 2×π × 30 ] √ ((2×50×8)/ (6 × 10⁻³ × 30 ))

= A = 0.0707 m

= A = 7.07 cm

(b) Average power = P

Wave speed = V

Using the equation of Power = (1/2) ×  ρ × ω² × A² × S × v,

We can see that P ∝ ω² × v

= P ∝ v² × v

= P ∝ v³

Thus, when wave speed of string is doubled, the average power will be 8 times.

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The acceleration of the block moving upward is 5.15g.

The two blocks of mass 5 kg and 4.71 kg are connected by a massless rope, that goes over a frictionless, stationary pulley.

The acceleration of the 5 kg block is 34g in downwards direction.

So, if the tension is the rope is T, then we can write,

For the 5 kg block,

5g - T = 34g

For the 4.71 kg block,

T - 4.71g = 4.71a

Where, a is the upward acceleration of the block of mass 4.71 kg,

Solving the above 2 equations,

We get,

5g - 4.71(a-g) = 34g

Solving further,

9.7g - 4.71a = 34g

4.71a = -24.3g

a = -5.15g

So, the upward acceleration of the 4.71kg block is -5.15g.

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One end of the taut cable is pulled, causing a transverse pulse to be created. In 0.835 seconds, the pulse travels four times down the cable and four times back then the tension in the ethernet cable is determined as 67 N.

It is given to us that -

Ethernet cable is 3.90 m long => l = 3.90 m

and has a mass of 0.190 kg => m = 0.190 kg

It is also given that the transverse pulse makes four trips down and back along the cable in 0.835 s.

=> time taken, t = 0.835 s

We have to find out the tension in the cable.

We know that

Speed = Distance/Time ----- (1)

Since the transverse pulse applied on the ethernet cable makes four trips down and back along the cable, the total distance travelled by the pulse = 4 * (2l)

Now, using equation (1) we can find out the speed of the pulse by -

[tex]v = \frac{4*2*3.90}{0.835} \\= > v = 37.36[/tex] m/s ---- (2)

We also know that the mass density of the pulse can be determined by the formula -

μ = [tex]\frac{m}{l}[/tex] ------ (3)

where,

m = mass of the cable

l = length of the cable

Substituting the given values of mass and length of the cable in equation (3), we can find out the mass density of the pulse as -

μ = [tex]\frac{m}{l} = \frac{0.190}{3.90} = 0.048[/tex] kg/m ------ (4)

We also know that the tension in the cable can be represented by the formula -

T = μ[tex]v^{2}[/tex]  ----- (5)

Substituting the values of v and μ from equations (2) and (4) respectively, we can find out the tension in the cable as -

T = μ[tex]v^{2}[/tex]

=> T = 0.048 * [tex](37.36)^{2}[/tex]

=> T = 67 N

Thus, the tension in the ethernet cable is determined as 67 N.

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In Charle's law, volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant.Hence, correct options are A , B and C.

Gases have a tendency to expand when heated, according to the experimental gas law known as Charle's law. The Kelvin temperature and the volume will be directly proportional when the pressure on a sample of a dry gas is held constant, according to a modern interpretation of Charles's law. According to Harles' Law, a gas's volume at a constant pressure is directly proportional to its Kevin temperature for a given mass. V1/T1=V2/T2 is how the relationship between temperature and volume is expressed mathematically. The balloon will revert to its original shape once you are back in a warm environment, though. This is due to Charles' Law, which states that a gas, in this case, helium, occupies more space when it is warm.

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kinematics can answer all the following questions except, Why does a baseball drop to the ground down after being thrown?

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The force, net force exerted was found to be 2000N

Define force ?

In mechanics, force is any action that seeks to sustain or modify the motion of a body or to deform it. The idea of force is usually defined in terms of Isaac Newton's three laws of motion, as stated in his Principia Mathematica (1687). Newton's first principle states that a body at rest or moving at a regular pace in a straight line will continue in that condition unless some force is applied to it.

The second law states that when an external force applies on a body, it causes the body to accelerate (change in velocity) in the direction of the force. The acceleration is related to the magnitude of the external force and inversely proportional to the amount of matter in the body. According to Newton's third law, when one body exerts a force on another, the second body exerts an equal force on the first.

the cars weigh was =1250kg

trailer weight was = 550 kg

acceleration=1.60

a) F=ma

=(550)(1.60)

=880 N

b) F=ma

The net force was found to be =880 N

c) F = ma

(1250) (1.6)

=2000N

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The possible distance from the person to the other speaker is c) 8.1m

To determine the possible distance we first convert the frequency from kHz to Hz as follows;

As 1 kHz = 1000 Hz

Therefore; 0.50 kHz = 0.50 × 1000 = 500 Hz

Now we determine the wavelength as follows;

wavelength = v ÷ f

wavelength = 340 ÷ 500

wavelength = 0.68 meters

Half wavelength = 0.5 × wavelength = 0.5 × 0.68 = 0.34 meters

For the sound interference to be destructive, the second source must be an odd multiple of 1/2 wavelength away from the first, therefore we calculate the possible distance from the person to the other speaker as follows;

distance between the person and speaker + odd multiple of wavelength = possible distance from other speaker

5 m + 0.34 m = 5.34 m

5 m + 3 × 0.34 m = 6.02 m

5 m + 5 × 0.34 m = 6.7 m

5 m + 7 × 0.34 m = 7.38 m

5 m + 9 × 0.34 m = 8.06 m  

5 m + 11 × 0.34 m = 8.74 m

The value closest to any options provided above is 8.06 m therefore the correct option is 8.1 m.

Although a part of your question is missing, you might be referring to this question:

Two speakers are placed side by side and driven by the same frequency of 0.50 kHz. If the distance from a person to one speaker is 5.0 m and the person detects little or no sound, which of the following is a possible distance from the person to the other speaker? The sound speed in the room is 340 m/s

a) 8.4 m

b) 9.1 m

c) 8.1 m

d) 7.7 m

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Supernova debris moves about 100 times faster than the Sun. The gravity of galaxy alone would not retain the supernova debris.

A planet's orbital velocity modifications, depending on how far it's far from the solar. The closer a planet is to the solar, the more potent the sun's gravitational pull on it, and the quicker the planet actions. The farther it's far from the sun, the weaker the Solar's gravitational pull, and the slower it moves in its orbit.

Hubble's law, which says certainly that a galaxy's speed is directly proportional to its distance, additionally tells us some thing important approximately the country of the universe. If the universe is static and unchanging, there should be no correlation among distance and pace.

They must come to be greater turbulent. It produces so much visible light that it is opaque and blocks our view of anything beyond it. It reflects most light from far distances of the galaxy away from our line of sight. A star starts offevolved its time on the principle sequence with 10 solar loads.

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A. The average speed of the flea is 0.52 m/s

B. the centripetal acceleration of the flea is 1.8 m/s²

A. How do I determine the average speed?

We'll begin by obtaining the angular velocity. This can be obtained a follow:

ω = 2π/ T

ω = (2 × 3.14) / 1.8

ω = 3.49 rad/s

Finally, we shall determine the average speed. This is shown below:

v = ωr

v = 3.49 × 0.15

v = 0.52 m/s

Thus, the average speed is 0.52 m/s

B. How do I determine the centripetal acceleration?

Haven obtain the average speed in the calculation made above, we can determine the centripetal acceleration as follow:

a = v² / r

a = (0.52)² / 0.15

a = 1.8 m/s²

Thus, the centripetal acceleration is 1.8 m/s²

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The answer to the given question is 1.90084 mm and the antenna was compressed to 19 cm respectively.

calculations;

assuming;

m = 400 kg be the total mass compressing the antenna,

h = 610 m be the height of the antenna,

g = 9.81 m/s² be gravitational acceleration,

E = 200 GPa = 2×108 N/m² be Young's modulus of steel.

The mass m applies vertical force F = mg

The cross-section of the antenna is S = πr²

Let Δh be the compression of the tower to be calculated.

By the definition of Young's modulus

Δh/h = F/(S×E)

Therefore

Δh = (h×F)/(S×E) = (h×m×g)/(πr²×E)

Substituting actual numbers

Δh = (610×414×9.81)/(π×0.15²×2×108) = 0.190084 mm

The antenna was compressed about 19 cm.

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Explanation:

First person:

First person is like you telling a story. It uses words like I or we. For example "I walked to the library after school," would be an example of first person. You are talking about yourself and what you did.

Second person:

Second person is referring to someone else. It uses words like you. This is like in a choose your own adventure book, with a sentence like "You advanced to the next level," or "You opened the door cautiously." You are talking about someone else, usually the person reading what you are righting.

Third person:

Third person is like you referring to someone in general. Common words for third person are she, he, they, them, or it. It is not always you talking about yourself or someone else. Some common examples are "The girl in the red coat then ate the cookie," or "They were in trouble!"

Hope this helps!

The radius of its orbit is 102.22 km

The proportionality constant utilized in Newton's Law of Gravitation is the gravitational constant. The universal gravitational constant, abbreviated G and measured in Nm2/kg2, is the gravitational force that attracts any two unit masses separated by a unit distance.

Earth's acceleration caused by gravity, or the magnitude of g, is 9.8 m/s2. According to this, an item falling freely on Earth would accelerate by 9.8 meters per second. The gravity of the Earth is to blame for this acceleration.

For this question, force caused by the satellite from the planet must be round about equal to the Centrifugal force :

[tex]F_{g} = F_{c[/tex]

[tex]\frac{GMm}{r^2}[/tex] = [tex]mw^2r[/tex]

where ;

G = gravitational constant and this value is constant = 6.67 × [tex]10^-^1^1[/tex]

m = mass of the earth and

r = distance

Using the concept of period through the angular velocity, we have

[tex]\frac{GM}{w^2}[/tex] = [tex]r^3[/tex]

Substitute the value and we will get

[tex]r^3[/tex] = 1068193.154

r = 102.22 km

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The term is growth.

This term is used to define the physical development of height and weight in an individual.

The growth depends on an individual.

During the growth the hands and feet are likely to grow. This develops the height of any individual and the weight is also defined as the individual grows.

It is the continuously changes of the characteristics of the body, most noticeable in height and weight.  

The ages 13-15 and 17-18 the two major brain growth spurts occur. In times of growth spurts the changes is visible during the first year of puberty.

Therefore, the term for periods of accelerated physical development with associated changes in height and weight is growth.

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A thermal infrared sensor camera detects infrared radiation and uses this information to create a picture.

In thermal or infrared detection systems, sensors are used to detect radiation in the infrared region of the electromagnetic spectrum. The thermal energy or heat produced by the scene being watched is detected by an infrared camera, which then transforms it into an electrical signal. After that, this signal is processed to create an image. An infrared camera's ability to detect heat can be quantified very precisely. Infrared cameras can be used to assess thermal performance and gauge the intensity of heat-related issues. In general, bodies and objects produce more radiation when they are heated up. Walls and other solid things cannot be seen through infrared cameras. They are limited to measuring heat.

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This statement is untrue. A pseudo force is centrifugal force. It's not true. Since there is a hole in the spin dryer's drum, there is nothing to cause the water to move in a circular motion or exert a high centripetal force.

The force that pushes an item rotating away from its axis of rotation is known as centrifugal force. The propensity of an object travelling in a circle to move away from the circle's center is known as centrifugal force. When viewed from a rotating frame of reference, the centrifugal force in Newtonian mechanics appears to act on every object. It is pointed away from the origin of the coordinate system, along an axis that is perpendicular to the axis of rotation.

When rotating coordinate systems are used to analyze rotating objects, such as centrifuges, centrifugal pumps, centrifugal governors, and centrifugal clutches, as well as centrifugal railways, planetary orbits, and banked curves, the concept of centrifugal force can be applied.

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The correct answer is pyruvate to oxaloacetate.

Enzymatic activation of pyruvate kinase increases cytosolic oxaloacetate to inhibit the Warburg effect is a research paper written by Elizabeth K Wiese, Sadae Hitosugi, Sharon T Loa, Annapoorna Sreedhar, Lindsey G Andres-Beck, Kiran Kurmi, Yuan-Ping Pang, Larry M Karnitz, Wilson I Gonsalves and Taro Hitosugi.

Avidin is a glycoprotein,  four identical subunits are there in avidin. It is found in white part  of the egg of reptiles, amphibians, and birds.

Avidin binds in specific manner with biotin.

Avidin  is resistant to some of the enzymes like  pancreatic enzymes.

Therefore, the conversions of Pyruvate into glucose and  and the conversion of  Pyruvate  into oxaloacetate would be blocked if  the  avidin is added  to a cell homogenate.

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The acceleration of free fall on the planet is given by 39.2 m/s².

The acceleration of free fall is the acceleration at which a body falling freely experiences the gravitational pull of a single planet. It is also known as a gravitational acceleration.

Value of  the acceleration of free fall on earth is 9.8 m/s².

The formula of acceleration of free fall on any planet is given by:

g₁ = GM/R²

As the extrasolar planet appears to be rockier and denser than earth. it is 16 times as massive as earth, but its diameter is only twice that of earth, the acceleration of free fall on any planet is given by:

g₁ = GM/R² = 16GMe/(2Re)² = 4 GMe/Re = 4g = 4× 9.8 m/s² = 39.2 m/s² .

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The distance to the concession booth is 1.386 kilometers, or kilometers per hour. A swim meet's length is influenced by a number of variables.

Explanation:

d = 0.18 * 7.7 = 1.386km/hr.

The distance to the concession booth is 1.386 kilometers, or kilometers per hour.

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A baseball is thrown vertically upward and feels no air resistance. As it is rising its momentum is not conserved, but its mechanical energy is conserved.

Momentum may be defined as a unique property of a moving body that the body has by virtue of its mass and motion and that is equal to the product of the body's mass and velocity.

According to the context of this question, as an object typically moves along the vertical direction, the gravitational potential energy, and the kinetic energy change. So, due to this, its momentum is not conserved, but its mechanical energy is conserved.

Therefore, a baseball is thrown vertically upward and feels no air resistance. As it is rising its momentum is not conserved, but its mechanical energy is conserved.

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The induced electromotive force in the bar is 0.206 volt.

It is the creation of a potential difference in a coil as a result of variations in the magnetic flux flowing through it. To put it another way, it is said that electromotive force, or EMF, is induced when the flux connecting with a conductor or coil changes.

Given parameters:

Length of the bar: l = 0.12 meter

Speed of the bar: v = 29.6 m/s.

Magnetic field: B = 58 mT = 58 × 10⁻³ T.

Hence,  the induced electromotive force in the bar: ε = lvB

= 0.12 × 29.6 × 58 × 10⁻³ Volt

=0.206 volt.

Hence, the induced electromotive force in the bar be 0.206 volt.

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Tensions in each examples are, T=222.264 N, T=0 T=148.176 N, T=111.132 N.

Given,

m=100lbs,=45.46 kg

(a) 2T= mg

T=mg/2

=(45.46×9.8)/2

T=222.264 N

(b) For pulley

2T= mg

T=mg/2

T=222.264 N

For pulley 2:

2T=[tex]W_p_u_l_l_e_y[/tex]=0

T=0

(c) Here 3T=mg

T=mg/3

T=148.176 N

(d) Pulley 1:

3T=mg

T=148.176 N

Pulley 2:

T-(-T)=0

2T=0

T=0

(e) Pulley:

4T=mg

T=mg/4

T=111.132 N

From the above cases we can say that the directional advantages exist as the tension get divided to those string which are connected to that weight only.

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The separation between two plates of parallel capacitor is 8.51 mm and when the separation is doubled the capacitance is reduced to halve.

Magnitude of Charge (Q) = 290 pc

Potential difference between plates (V) = 41.0 V

Let capacitance be = C

Using the relationship between charge and potential difference,

= Q = C × V

= C = Q / V

= C = 290 × 10⁻¹² / 41

= C = 7.07 × 10⁻¹² F

Now, we know that C = (ε × A) / d

Here, Area (A) = 6.80 cm² and

Distance = d

Thus, distance =

= d = (ε × A) / C

= d = (8.85 × 10⁻¹² × 6.80 × 10⁻⁴) / (7.07 × 10⁻¹²)

= d = 8.51 × 10⁻⁴ m

= d = 8.51 mm

Using Q = C × V,

= V = Q/C

If the separation between the two plates is doubled, then the capacitance is halve of the original value.

Thus, new V =

= 41 × 2

= 82 V

Hence, the new capacitance is 82 V when the distance of plates is doubles and the original separation between plates is 8.51 mm.

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The answers to the questions are (a) 3.17J, (b) -13.75J, and (c) -16.7J, respectively.

The degree to which a person taking the appropriate, intellect, wisdom, insight, empathy, etc., as demonstrated by their actions or by some other mental product, such as a scholarly paper, argument, piece of art, etc. a substantial amount of such wisdom, understanding, etc. usually depths.

Utilize U=mgy, wherein y is evaluated in relation to a standard. Here, y is calculated relative towards the well's top edge, where y is set to zero.

(a) y = 1.2m: U=mgy = (0.27kg)(9.80m/s²)(1.2m)=+3.17J

(b) y = –5.2m: U=mgy = (0.27kg)(9.80m/s²)(–5.2m) = −13.75J

(c) ΔU = Uf − Ui = (−13.75J)−(3.17J) = −16.92 = −17J

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The final pressure of a sample of a gas (5.0 mol) at 1.0 atm is expanded at constant temperature from 10 l to 15 l is 0.67 atm

Boyle's law states that at constant temperature of a given mass of confined gas, the product of its pressure and volume is also constant. Let P1 and V1 be the initial pressure and volume of the gas and P2 and V2 be the final pressure and volume of the gas.

P1 = 1 atm

V1 = 10 l

V2 = 15 l

According to Boyle's law,

P1 V1 = P2 V2

1 * 10 = P2 * 15

P2 = 10 / 15

P2 = 0.67 atm

Therefore, the final pressure is 0.67 atm

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When scientists refer to the cosmos as expanding, they indicate that it has been expanding ever since the Big Bang, when the universe first began.

Everything in the cosmos is all the matter and energy that are present in space are included. Additionally, it naturally encompasses you and time itself. The other planets and their numerous moons, in addition to Earth and the Moon, make up the cosmos.

Due to their frequent confusion, it's also critical to understand the distinction between space and the universe. All celestial bodies, matter, energy, galaxies, solar systems, and other such physical entities are collectively referred to as the universe. Space, on the other hand, describes the bare space in between all of these things.

As of right now, there is no evidence to support the existence of multiple universes; instead, what we can see points to the existence of just one, namely, our own.

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The energy dissipation should be 65 Kilo joule.

Power is nothing but measurement the rate of electrical energy transfer by an electric circuit per unit of time. It is denoted by P and measured using the SI unit of power which is watt or one joule per second. Electric power is commonly supplied by electric batteries and produced by electric generators.

So, P = ΔE/Δt

here P = 1 megawatt and time is 65 x 10^-3 sec

putting the values we get that

1 x 10^6 =  ΔE/ 65 x 10^-3

ΔE = 10 ^ 6 x 65 x 10 ^-3

ΔE = 65 x 10 ^3

ΔE = 65 K Joule

hence the energy dissipation should be 65 Kilo joule.

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A As the projectile goes upward, what energy changes take place the energy is gravitational energy.

At the beginning, the projectile can have kinetic electricity because of the preliminary velocity, and we know, via way of means of conservation of electricity, that if there may be no friction withinside the air, the kinetic electricity of the item could be converted into gravitational capability electricity because the peak increases.

In Part A As the projectile goes upward, what energy changes take place then the energy change is gravitational energy change.

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A student weighed a chunk of solid carbon dioxide as 1.82 gram.[tex]\frac{0.85 L}{0.0011667 L}[/tex] (728.55 ) is the gas-to-solid volume ratio if the sublimated chunk produced gaseous carbon dioxide with volume 0.85 liter at atmospheric pressure.

The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth. Atmospheric pressure is commonly measured with a barometer.

density of [tex]CO_{2}[/tex] = 1.56g/[tex]cm^{3}[/tex]

density =[tex]\frac{mass}{volume}[/tex]

volume of solid  [tex]CO_{2}[/tex]

[tex]\frac{1.56g}{1cm^{3} }[/tex]=[tex]\frac{1.82 g}{?}[/tex]

? = [tex]\frac{1.167 }{cm^{3} }[/tex]

volume of [tex]CO_{2}[/tex] from  [tex]cm^{3}[/tex] to L

1 [tex]cm^{3}[/tex]= 1 mL

1.167[tex]cm^{3}[/tex]  × [tex]\frac{1 mL }{ 1cm^{3} }[/tex]× [tex]\frac{1L}{1000mL}[/tex]= 0.0011667 L

Ratio:   [tex]\frac{V gas}{V solid}[/tex]

([tex]\frac{0.85 L}{0.0011667 L}[/tex]) = 728.55

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The two independent components of Projectile motion in 2D plane are horizontal and vertical.

Projectile motion is nothing but a form of motion experienced by an object or particle that is projected in a gravitational field, such as from Earth's surface, and moves along a curved path under the action of gravity only. It means the object is thrown from earth and due to the gravity object is again coming back to earth.

When object is moving up, the velocity it has can be derived into  its components horizontally and vertically because velocity is a vector quantity.

V = Vx + Vy

where V is the resultant vector and Vx and Vy are the horizontal and vertical components of the velocity.

Hence the two independent components of Projectile motion in 2D plane are horizontal and vertical.

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