Question

Acceleration of a particle changes when:

• A. direction of velocity changes
• B. magnitude of velocity changes
• C. either of above
• D. speed is constant

Answer 1

The correct option is C either of above

The acceleration of a particle is vector quantity means which have both magnitudes as well as direction. The acceleration of the particle is defined as the rate of change of velocity to time.

$\overrightarrow{a}=\frac{d\overrightarrow{v}}{dt}$

The correct option is C.