Question

The unit of acceleration is

• A. $\frac{m}{s}$
• B. $\frac{m}{min}$
• C. $\frac{km}{hr}$
• D. $\frac{km}{mi{n}^2}$

Answer 1

The correct option is D

$\frac{km}{mi{n}^2}$

Definition of acceleration:

Acceleration is defined as the rate of change of velocity of the object with respect to time

Acceleration = $\frac{changeinvelocity}{time}$

unit of velocity is $\frac{m}{s}$, and unit of time is second

so,

Acceleration = $\frac{m/s}{s}$

a = $\frac{m}{s^2}$

so ( $\frac{m}{s^2}$ ) is the SI unit of acceleration.

We can convert $\frac{km}{mi{n}^2}$ to $\frac{m}{s^2}$

So, $\frac{km}{mi{n}^2}$ is the unit for acceleration.

Hence,

Option (d) is the correct answer.