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A 1.4 kg ball is dropped from an unknown height, h, and hits the ground with a velocity of 15.0 m/s and rebounds with a velocity of 11.0m/s. If the ball is in contact with the ground for 1/35 of a second, find the average force the ground applies to the ball. (Use GUESS method.) Answer: 1288 N.

Given: m = 1.4 kg, V-initial = 15 m/s, V-final = 11.0 m/s, t = 1/35 s

Unknown: average Fn ground applies

E:

WE:

S:

S:

Can someone please get me started?

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# Homework Help: Finding Normal Force

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