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Figure 7 [Vmax-5.19 m/s; At-5.54s Question 8: A tennis player in Figure 8 strikes the tennis ball with her racket while the ball is still rising. The bal speed before impact with the racket is v 15 m/s and after impact its speed is v2 22 m/s, wit the directions as shown in the figure. It the 60 g ball is in contact with the racket for 0.05 s,


determine the average force R exerted by the racket on the ball. Comment on the treatment of the ball weight during impact. 20° 01 Figure 8 R 43.0N B-8.68

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-(-じ, c0310 尺=43 N

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