A mass accelerates uniformly when the resultant force acting on it is:
Correct answer: B. Constant but not zero
- A. Zero
- B. Constant but not zero
- C. Increases uniformly with respect to time
- D. Both (a) & (c)
Explanation
A mass accelerates uniformly when the resultant force acting on it is constant but not zero. This is because a constant, non-zero force ensures a steady, unchanging acceleration as per Newton's second law (F = ma). If the force is zero, the mass either remains in its current state of motion or at rest, indicating no acceleration. If the force increases uniformly, the acceleration will also increase, resulting in non-uniform acceleration. Option D is incorrect as it combines two mutually exclusive scenarios.
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