A body of mass 5 kg is acted on by a resultant force of 20 N. What is its acceleration?
Answer and explanation
Correct answer: B. 4 m/s2
- Step 1: Newton's second law: F = ma, so a = F/m. Step 2. a = 20 / 5 = 4 m/s2. Answer: 4 m/s2. Why not the others: 100 m/s2: That multiplies force by mass. 0.25 m/s2: That divides mass by force. 15 m/s2: That subtracts the mass from the force.
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