Question

Which one of the following does not hold true for change in velocity?

• A. It changes by changing the direction while keeping the speed same.
• B. It changes by changing the speed as well as the direction.
• C. It changes while keeping the speed as well as the direction same.
• D. It changes by changing the speed while keeping the direction same.

Answer 1

The correct option is C It changes while keeping the speed as well as the direction same.

Velocity is a vector quantity. To bring a change in velocity of a body, we have to either change the direction of the body, the speed of the body or both at the same time.
But if we make the speed and direction of the body constant, there won't be a change in the body's velocity.