Question

A particle starts from rest at t=0 and has an acceleration is given in the figure draw VT graph for 4 second.

Answer 1

your answer..............

Answer 2

Answer:

The velocity must be increases continuously with time and then comes to zero.

Explanation:

Given that,

A particle starts from rest at t = 0.

According to figure,

We need to calculate the velocity at 2 sec

Using equation of motion

$v= u+at$

$v = 0+3\times2$

$v = 6\ m/s$

Now, the velocity from 2 sec to 4 sec

The acceleration is -3 m/s²

$v = u+at$

$v =6-3\times2$

$v=0$

Hence, The velocity must be increases continuously with time and then comes to zero.