Question

A body starts from rest and has constant acceleration of 2m/s 2. Find its velocity at t=2 seconds

Answer 1

Velocity of the object, moving with constant acceleration, at time $t$ is $v(t) = v_0 + a t$, where $v_0$ is initial speed and $a$ is acceleration.

Hence, $v(2) = 0 \frac{m}{s} + 2 \frac{m}{s^2} \cdot 2 s = 4 \frac{m}{s}$.