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Joshua O

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PE1 + KE1 = PE2 + KE2 mgh1 + mv12/2 = mgh2 + mv22/2 m(gh1 + v12/2 ) = m(gh2 + v22/2 ) gh1 + v12/2 = gh2 + v22/2 but h1 = zero so ½(16)2 = 9.81h + ½(12)2 128 = 9.81h + 72 h= 5.7 m

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