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I know that $p=mv$ and (0.1kg)(15m/s)=1.5 kg m/s and the momentum at the vertex is 0, but what is the momentum halfway up?

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closed as too localized by Qmechanic Feb 22 '13 at 18:11

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is "halfway" defined as half of the final height, or half of the time? – Alan Rominger Feb 22 '13 at 18:01