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Posted: **Thu Jul 14, 2022 8:04 pm**

: A Tennis Ball With Mass 57 G Is Travelling At 45 M S S When It Is Intercepted By A Tennis Racquet That Applies An Aver 1 (16.95 KiB) Viewed 39 times

: A Tennis Ball With Mass 57 G Is Travelling At 45 M S S When It Is Intercepted By A Tennis Racquet That Applies An Aver 2 (13.06 KiB) Viewed 39 times

A tennis ball with mass 57 g is travelling at 45 m/s [S] when it is intercepted by a tennis racquet that applies an average force of 200 N during a short period of time, after which the ball travels at 62 m/s [N]. What is the time of contact between the ball and the racquet?
Rosie MacLennan, Canadian Gold Medallist, is 3.5 m above the trampoline. When she lands, the trampoline compresses 22 cm. Calculate the spring constant if Rosie weights 60 kg.