Created by StemPy LabA fielder pulls her hands back as she catches a fast cricket ball. Why does this hurt less?
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← A tennis ball of mass 58 g comes towards a racket at 20 m/s and leaves it at 30 m/s the other way. The contact lasts 5.0 ms. What is the average force of the racket on the ball?An air rifle of mass 4.0 kg, held loosely at rest, shoots a 20 g pellet out at 300 m/s. How fast does the rifle kick back? →
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