A 0.3 kg tennis ball is dropped from rest at a height of 3.6 m onto a hard floor.(adsbygoogle = window.adsbygoogle || []).push({});

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a) What is the speed of the ball at the instant of contact with the floor?

|v| = m/s *

sqrt( 2*9.81*3.6) OK

HELP: This is just a problem in one-dimensional kinematics with constant acceleration. What is the acceleration of the ball while it is in the air?

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A flash photograph shows that the ball is compressed a maximum of 0.6 cm when it strikes the floor.

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b) Assuming that the acceleration of the ball is constant during its contact with the floor, what force does the floor exert on the ball?

|f| = N

HELP: Again, this is a problem in one-dimensional kinematics with constant acceleration. What is the acceleration of the ball when it is in contact with the floor?

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c) Over what time does the force act in bringing the ball to rest?

D t = s

Request some guidance as how to proceed with part b and c.

Thanks,

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# Homework Help: Force and Simple Dynamics: Dropped Tennis Ball

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