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August 4, 2015

Homework Help: Physics

Posted by Alphonse on Thursday, November 22, 2012 at 11:59pm.

A 14.3 gram bullet embeds itself in a 2.823 kg block on a horizontal frictionless surface which subsequently collides with a spring of stiffness 378 N/m.  The maximum compression of the spring is 13.5 centimetres.
 
a)  What was the initial speed of the bullet in m/s?

b)  How long did it take for the bullet-block system to come to rest after contacting the spring?

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