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Nastasi K.

asked • 10/28/15

Physics Help?

A bullet going 153 m/s crashes through a wood plank. After passing through the plank, its speed is 130 m/s. Another bullet, of same mass and size traveling at 92 m/s is also fired at the plank.

What will this second bullet's speed be after tunneling through?

Assume:

1.) The resistance of the plank is independent of the speed of the bullet.

2.) The plank does the same amount of work on the two bullets.

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