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May 6, 2015

Homework Help: physics

Posted by Janus on Saturday, January 23, 2010 at 2:14am.

For a ballistics study a 1.9 gram bullet is fired into soft wood at 380 meters/sec and penetrates 15 cm.

a.) find the retarding force (resistance) in N.

b.) the time needed to stop the bullet in sec.

c. acceleration of the bullet in meters/sec.

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