Question

Which of the following best define the acceleration of a particle:

• A. the rate of change of velocity.
• B. only experienced during a change of direction.
• C. only experienced during a change of speed.
• D. calculated by multiplying speed by velocity.
• E. always constant.

Answer 1

The correct option is A the rate of change of velocity.

Acceleration is defined as the rate of change of velocity.

acceleration $a=\frac{changeinvelocity}{timeinterval}$

Hence, any change in the speed or direction would cause a change in velocity, and hence will produce acceleration.

So, the correct option is A.