Question

Identify the wrong statement about acceleration.

• A. Acceleration is rate of change of velocity per second
• B. Acceleration is rate of change of speed per second in a certain direction
• C. Acceleration is a vector quantity
• D. Unit of acceleration is $m{s}^{-1}$

Answer 1

The correct option is D Unit of acceleration is $m{s}^{-1}$

Acceleration= rate of change of velocity = change in velocity velocity / time =$\frac{m{s}^{-1}}{s}=m{s}^{-2}$

Unit of acceleration is $m{s}^{-2}$.

Hence, option D is correct