The velocity time graph for two bodies a and b

Asked by admin @ 05/08/2021 in Physics viewed by 289 People

The velocity-time graph for motion of two bodies A and B is as shown. Read the graph carefully and answer the following questions:

Which of the two bodies has a higher velocity at time t = 2s (b) t= 4s? Which of the two bodies has (a) constant velocity (b) increasing velocity? At what time is the velocity of the two bodies same?What is the velocity of A and B at time t=1s? What is the change in the velocity of body B over a 2 second interval ?

Answered by admin @ 05/08/2021

Answer:

let us take the body moving with uniform velocity as A and the other moving with uniform acceleration B(having inclined slope).

1. a) at t = 2s body A has higher velocity

b) at t = 4s body B has higher velocity.

2. a) body A has constant velocity .

b) body B has increasing velocity.

3. at t = 3s the velocity of the two bodies is same .

4. at t = 1s velocity of

body A is 30m/s and body B is 10m/s.

5. at first time interval (that is at t = 2s) the velocity is 20m/s. And at second time interval (that is at t = 4s) the velocity is 40m/s.

change in velocity = velocity at second interval - velocity at first interval

= (40-20)m/s

= 20m/s

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