Question

A car starts to move from rest and attains a velocity of 30 m/s after 15 second. Is the velocity of the car uniform? Give reason.

Answer 1

Of course not! a=(30m/s -0)/(15/s)= 2m/s/s That means the speed increases by 2m/s each second. At t=0. v=0; at t=1, v=2m/s; at t=2, v=4m/s….etc.

Hope this helps you mate!

Answer 2

Answer:

we know that

acceleration=Vf-Vi/t

a=30-0/15

=30/15

=2m

velocity is uniform because body covers 2m in each second.

hope is it helpful to you.