Question

What term is used to denote the change in velocity with time? Obtain its SI unit.

Answer 1

Acceleration

1. Acceleration is defined as the rate of change in velocity.
2. $Acceleration=\frac{Changeinvelocity}{Timetaken}=\frac{Finalvelocity-Initialvelocity}{Timetaken}$.

SI unit of acceleration

1. Formula for acceleration is given by: $Acceleration=\frac{changeinvelocity}{timetaken}$.
2. Unit of velocity is $m/s$ and the unit of time is $s.$
3. Where, $m$ is the meter and $s$ is second.
4. $Acceleration=\frac{Changeinvelocity(m/s)}{Timetaken\left(s\right)}=\frac{m/s}{s}=\frac{m}{s^2}.$

Hence, acceleration is the rate of change in velocity. SI unit of acceleration is $\mathit{m}\mathbf{/}{\mathit{s}}^{\mathbf{2}}$.