Question

It is observed that acceleration of the car is uniform . Give reason​

Answer 1

Answer:

There is a constant change in velocity.

Explanation:

Acceleration is the rate of change of velocity.

If you are given a velocity-time graph, then you can prove that the acceleration of the car is uniform by finding the gradient of the line on the velocity-time graph.

For example, the car has a constant acceleration of 20m/s² which means it is going faster by 20 m for every second.

Answer 2

Explanation:

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11th

Physics

Motion in a Straight Line

Problems on Equation of Motion

Two cars A and B move such ...

PHYSICS

Two cars A and B move such that car A moving with a uniform velocity of 15 ms

−1

overtakes car B starting from rest with an acceleration of 3 ms

−2

. After how much time do they meet again?

MEDIUM

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CALCULATOR

Enter the know values to find unknown

Acceleration

Distance

Final Velocity

v = u + a*t

Initial Velocity u

m/s

Final Velocity v

m/s

Time t

s

Acceleration a

m/s²

RESET VALUES

ANSWER

Let us assume that the car A and B meet after a time

′

t

′

Distance travelled by A in that time is vt

=15t

Distance travelled by B is

s=ut+

2

1

at

2

s=

2

3t

2

2

3t

2

=15t

t=0,10s

t=0 is trivial . Therefore, at t=10s, both the cars meet.

Answered By

Aditi

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