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OpenStudy (anonymous):
A 48.0 kg pole-vaulter running at 11.5m/s vaults over the bar. His speed when he is directly over the bar is 1.5m/s. Neglect air resistance, as well as any energy absorbed by the pole, and
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OpenStudy (anonymous):
\[KE _{i} + PE _{i} + W _{ext} = KE _{f} + PE _{f}\]
OpenStudy (anonymous):
what is the question?
OpenStudy (anonymous):
oh hm..idk? the probelm didnt ask any question
OpenStudy (anonymous):
wow. lol I'm lost. There is nothing to count and the problem just hangs there
OpenStudy (anonymous):
aw ok then ill just skip then? xD
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OpenStudy (anonymous):
lol :P
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