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anyanavicka [17]
3 years ago
5

A stone tumbles into a mine shaft and strikes bottom after falling for 4.2 second how deep is the mine shaft

Physics
1 answer:
rjkz [21]3 years ago
5 0
4.2*9.8\\41.16

41.16 meters
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This problem is a piece o' cake, IF you know the formulas for both kinetic energy and momentum.  So here they are:

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So, now ... We know that

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