- #1
tristanmagnum
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Homework Statement
Agent Arlene devised the following method of measuring the muzzle velocity of a rifle (the figure below). She fires a bullet into a 4.064-kg wooden block resting on a smooth surface, and attached to a spring of spring constant k = 164.5N/m . The bullet, whose mass is 7.870 g, remains embedded in the wooden block. She measures the maximum distance that the block compresses the spring to be 9.460cm .
(Figure 1)
http://session.masteringphysics.com/problemAsset/1696765/3/Giancoli7.ch11.p22.jpg
What is the speed v of the bullet?
2. Homework Equations
v=√(k/m)*x
The Attempt at a Solution
i tried using that equation and different variations but my mastering physics says I'm incorrect.