43. The bullet weighing 20 grams at the time of impact

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43. The bullet weighing 20 g at the moment of impact the wall at an angle of 90 ° had a velocity of 300 m / s. Delve into the wall for some distance "She stopped after a time with 5 • 10-4. Define:

1) average wall resistance force Fc and the distance l, at which the bullet entered;

2) the speed with which ?k bullet fly out of the wall, if the wall will have a thickness of 5 cm.

Additional information

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)


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