Yes. A body has zero acceleration when it is moving with constant velocity. The acceleration of a body is given by, \[a=\frac{v-u}{t}\] If velocity is constant, then $v=u$. Therefore, $a=0$. Velocity – Time Graph of Uniform Motion of a Body [Read: Motion in a Straight Line]

A body thrown vertically upwards takes ‘t’ time to reach the highest point. What would be the time required to reach the same point during its return?

A bomb is to be dropped from a helicopter at a target on the ground. Explain how it can hit the target.

A ball is thrown upward with velocity ‘u’. What will be its velocity when it returns to earth? Explain.

A body travels one half of a distance with uniform velocity v1 and the other half with uniform velocity v2. Find the magnitude of the average velocity.