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A boy is running with kinetic energy of 810j if the boy has a mass of 80kg what is his peed
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Oct 13, 2017
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A boy is running with kinetic energy of 810j if the boy has a mass of 80kg what is his peed
Physics
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Ivan Chepurnyi
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Ivan Chepurnyi
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KE=(1/2)mv² ⇒ v=√(2KE/m)
Data:
KE=kenetic energy=810 J
m=mass=80 Kg
v=velocity (speed)
v=√(2KE/m)
v=√(2*810 J/80 Kg)=4.5 m/s.
answer: his speed is 4.5 m/s.
Rob Sawyer
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Oct 18, 2017
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