Question

it a body moves withuniform velocity its accleration is 0ms-2.Why

Answer 1

uniform here means that the body moves at the same velocity each second, that means there is no change in velocity. If it moves 2 m/s, then it does not change its velocity, always 2 m/s so there is no change in velocity. Recall that acceleration is basically the change in velocity so the acceleration is 0.