Only 50) If a person weighs 200 pound mass, how fast must they run in units of m

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inf29

Mathematics

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1lb=0.454kg

200lb=200*0.454=90.8kg

1cal=4.19 j

1000cal=4190j

1/2*m*v^2=4190j

1/2*90.8*v^2=4190

v^2=4190*2/90.8=92.3

=> v=9.6m/s

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