A ball of mass 0.15 kg moving at 20 m/s is hit straight back with the same speed. If the contact lasts 0.01 s, the average force on the ball is
A. 60 N
B. 300 N
C. 600 N
D. 0
1 answer
Best answer
Answer: C. 600 N
\(\Delta p=0.15\times40=6\) N s; \(F=\frac{6}{0.01}=600\) N.
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· 23 Oct 2026
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