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October 23, 2014

Homework Help: physics

Posted by Ronaldo on Tuesday, December 8, 2009 at 11:38pm.

1. Part (1 of 2) A 5.36 g bullet oving at 681.8 m/s penetrates a tree trunk to a depth of 3.79 cm. a) Use work and energy considerations to find the magnitude of the force that stops the
bullet. Answer in units of N.

and

2. Part (2 of 2) b) Assuming that the frictional force is constant, determine how much time elapses between the moment the bullet enters the tree and the moment the bullets stops moving. Answer in units of s.

THANK YOU!!!

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