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April 17, 2014

Homework Help: AP physics

Posted by Alica on Thursday, May 10, 2012 at 8:45pm.

A 1.60-g bullet, moving at 542 m/s, strikes a 0.249-kg piece of wood at rest on a frictionless table. The bullet sticks in the wood, and the combined mass moves slowly down the table.
(a) Find the speed of the combination after the collision.
m/s
(b) Find the kinetic energy of the bullet before the collision.
J
(c) Find the kinetic energy of the combination after the collision.
J
(d) How much kinetic energy did the bullet lose?
J
(e) What percent of the bullet's original kinetic energy is lost?
%

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