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04-03-2021
Physics

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How fast is a 90kg man running if his kinetic energy is 720 J?

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04-03-2021

Answer:
4 m/s
Explanation:
KE=1/2mv^2
720=1/2(90)
720=45v^2
divide by 45
16= v^2
over the square root
4=v
v= 4m/s

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