A net force acts on a 19 kg trolley and gives it an acceleration of 9 m/s. What is the size of the net force?
Answer and explanation
Correct answer: B. 171 N
- Step 1: Newton's second law: .
- Step 2: N.
Answer
171 N.
Why not the others: 19/9 N: it divides mass by acceleration. 28 N: it adds the numbers. 1710 N: it multiplies by unnecessarily.
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