Motion, Force, Work and Energy
Question: Water from a pipe at 5 kg/s strikes a ball and changes its velocity from 0 to 10 m/s. Force exerted by water on the ball is?
A - 0.5 N
B - 10 N
C - 25 N
D - 50 N
Answer: 50 N
Explanation: Force by flowing water is F = (m/t) * v = 50 N.
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