A body moving with uniform velocity has
Correct answer: B. zero net force acting on it
- 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.
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About Newton's Laws of Motion
Newton’s laws explain inertia, the relation between net force and acceleration, and action-reaction pairs. Questions involve free-body diagrams, balanced and unbalanced forces, F = ma, force as the rate of change of momentum, and identifying genuine third-law pairs, which act on different bodies.
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