Question

A car is moving on a road. It is said to be accelerating if :

• A. its velocity changes
• B. it increases its speed
• C. it decreases its speed
• D. it slows to a stop
• E. all of these options describe acceleration

Answer 1

The correct option is E all of these options describe acceleration

Acceleration is defined as the rate of change of velocity.

Mathematically it is given as $\overrightarrow{a}=\frac{d\overrightarrow{v}}{dt}$.

Any change in speed or the direction of object would change the velocity, and hence cause an acceleration.
Hence correct answer is option E.