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    ushjagirl's Avatar
    ushjagirl Posts: 1, Reputation: 1
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    #1

    Aug 28, 2012, 03:11 PM
    How do I find how high the flea jumps?
    When jumping, a flea accelerates at an astounding 1500 m/s^2, but over only the very short distance of 0.48mm. If a flea jumps straight up, and if air resistance is neglected (a rather poor approximation in this situation), how high does the flea go?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Aug 29, 2012, 06:11 AM
    Given the fleas acceleration over a known distance you can find it's initial velocity from v^2 = 2ad. Then the height it rises given that initial velocity can be found from v^2 = 2gh. Solve for h.
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