Question

Define acceleration. Express the acceleration of a body in terms of its initial and final velocities. What are the units of acceleration.

Answer 1

1. Acceleration is the change in velocity with respect to time.
2. If the initial velocity of the body is $u$ and the final velocity of the body is $v$ in time $t$, then the acceleration of the body is given by $a=\frac{v-u}{t}$.
3. Unit of acceleration is $m{s}^{-2}.$
4. Acceleration is a vector quantity.