Time rate of change of momentum of a body equals the:
Correct answer: B. Force
- A. Impulse
- B. Force
- C. Torque
- D. Velocity
Explanation
Newton's second law states that the force on a body equals the rate of change of its momentum. Impulse is force times time and equals the change in momentum, not its rate of change, and torque is the rotational analogue of force.
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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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