Question

A rubber ball is dropped and bounces vertically fromahorizontal concrete floor. If the ball has a speed of 3.2 m/s justbefore striking the floor and a speed of2.1 m/s just afterbouncing, what is theaverage force of the floor on the ball? Assumethe ball is incontact with the floor for 0.14 s and themass of theball is 0.16 kg.
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