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OpenStudy (anonymous):

After falling from rest from a height of 32 m, a 0.54 kg ball rebounds upward, reaching a height of 22 m. If the contact between ball and ground lasted 2.4 ms, what average force was exerted on the ball?

OpenStudy (turingtest):

Impulse is force times time, which equals change in momentum.\[J=Ft=\Delta P=mv_i-mv_f\]solve for the force

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