Question

A body starting from rest moves with uniform acceleration until it attains a speed of 100m/s after 20 s. It maintained this speed for the next 30s and came to rest by  uniformly deceleration in 30s. (a.) Find its acceleration.​

Answer 1

5m/s^2

Step-by-step explanation:

`v_f=v_o+at`

Since it started from rest:

`100m/s=a(20s) \\\\a=5m/s^2`

Hope this helps!