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How long does it take a bullet to pass through a board?

A bullet traveling horizontally at a speed of 350 m/s hits a board perpendicular to the surface, passes through and emerges on the other side at a speed of 210 m/s. The board is 0.04 m thick, how long does the bullet take to pass through it?

Solution Summary

This solution calculates the time it takes a bullet to pass through a board.