A body moving with uniform velocity has
- A. a net force acting on it in the direction of motion
- B. zero net force acting on it
- C. a net force acting opposite to its motion
- D. an increasing acceleration
Explanation
Uniform velocity means zero acceleration, and by Newton's second law zero acceleration requires zero net force. The individual forces need not be absent: a car at steady speed has thrust and friction that cancel exactly. A non-zero net force would necessarily change either the speed or the direction.