Bullet

A bullet is moving with a velocity of \(30\sqrt{2}\ \si{\meter/\second}\) is fired into a fixed target, it penetrates to a depth of \(s\) meters. If the bullet is fired into a target of thickness \(\dfrac{s}{2}\) meters, made from the same material, with the same velocity, what will be the bullet's velocity when it exits the target?

Assumptions

  • The resistive force on the bullet in the target is a constant, independent of velocity or position.
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