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A 9.1 g ball is hit into a 98 g block of clay at rest on...

A 9.1 g ball is hit into a 98 g block of clay at rest on a level surface. After impact, the block slides 8.0 m before coming to rest. If the coefficient of friction is 0.60, determine the speed of the ball before impact. (Answer: 33m/s)
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Answer #1

Kinetic energy will convert into friction energy.

Kinetic energy = friction force * distance

0.5*9.1g*V^2 = 0.6*(9.1g+98g)+9.8*8

V = 33.1 m/s Answer

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