Which one of the following statements qualitatively explains the second law of motion?
- A. The rate of change of angular momentum of a body is equal to the applied force.
- B. The rate of change of displacement of a body is directly proportional to the applied force.
- C. The rate of change of acceleration of a body is directly proportional to the applied force.
- D. The rate of change of momentum of a body is equal to the applied force. ✓
Correct Answer: D. The rate of change of momentum of a body is equal to the applied force.
Explanation
Newton's second law of motion states that the rate of change of momentum of a body is directly proportional to the applied force, and when using standard SI units, it is mathematically equal to the applied force (F = \frac{dp}{dt}).
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