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

User Yves Lange
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1 Answer

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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
User RealCasually
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