Question

Distinguish between uniform velocity and variable velocity.

• A. Uniform velocity changes with time, while variable velocity doesn't changes with respect to time.
• B. Uniform velocity is scalar , while variable velocity is vector.
• C. Uniform velocity doesn't change with time, while variable velocity changes with respect to time.
• D. Uniform velocity is vector , while variable velocity is scalar.

Answer 1

Answer: (C)

Uniform velocity doesn't change with time, while variable velocity changes with respect to time.

A body is said to have uniform velocity when its velocity does not change with time. A body has variable velocity when its velocity changes with change in time.

Note that a body is said to have uniform velocity only if both its magnitude and direction does not change with time.