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Answer to Question #201968 in Physics for Doms

Question #201968

 

You serve a volleyball that has a mass of 2.1 kg. With what speed does the ball leave your hand if it has 945 J of kinetic energy? 

 



1
Expert's answer
2021-06-07T03:45:07-0400

"KE=mv^2\/2\\to v=\\sqrt{2\\cdot KE\/m}=\\sqrt{2\\cdot945\/2.1}=30\\ (m\/s)" . Answer

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