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(a) Just for fun, a person jumps from rest from the top of a cliff overlooking a lake. In falling through a distance H, she acquires a certain speed v. Assuming free-fall conditions, how much farther must she fall in order to acquire speed 2v? Express your answer in terms of H.
13 years ago

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drwls
Four times farther, since the kinetic energy must quadruple.

4 H
13 years ago
Janey
Soko
12 years ago
Helper
I found its 3H
5 years ago

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