A body of mass 5 kg is acted on by a resultant force of 20 N. Its acceleration is
Correct answer: A. 4 m per second squared
- A. 4 m per second squared
- B. 100 m per second squared
- C. 0.25 m per second squared
- D. 25 m per second squared
Explanation
From F equals ma, the acceleration is 20 divided by 5, giving 4 m per second squared in the direction of the resultant force. Multiplying instead of dividing produces the 100 distractor. The force used must always be the resultant, not any single force acting on the body.
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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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