Question

Which of the following four statements is false?

• A. A body can have zero velocity and still be accelerated.
• B. A body can have a constant velocity and still have a varying speed
• C. A body can have a constant speed and still have a varying velocity
• D. The direction of the velocity of a body can change when its acceleration is constant.

Answer 1

The correct option is B A body can have a constant velocity and still have a varying speed

Speed is a scalar quantity that only number and velocity is a vector which means having magnitude and direction both. In order to have constant velocity the speed needs to be constant. Whereas a body can have constant speed with changing direction (velocity).

When car going roundabout is the perfect example of this situation.