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OpenStudy (anonymous):
A bullet of 2.5g travels 350m/s and crash against a tree and it slows uniformly to a stop, it penetrates 12 cm in the trunk. what force is exerted on the bullet to stop?
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OpenStudy (anonymous):
The loss of kinetic energy by the bullet will be equal to the work done against the force of impact with the tree.
OpenStudy (anonymous):
So you need to know the expressions for kinetic energy of the moving bullet, and the work done by a force when applied through a certain distance.
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