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April 16, 2014

Homework Help: physics repost

Posted by Jon on Thursday, April 3, 2008 at 9:33am.

A marksman at rest fires a 4.00-kg gun that expels a bullet of mass 0.0140 kg with a velocity of 181 m/s. The marksman's mass is 81.0 kg. What is the marksman's velocity after firing the gun?

mc = 85kg
md = 0.0140

-(0.0140)(-181)/85
= .0298 m/s

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