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A person pulls a crate with 120 N of force against 100 N of friction a distance of 5 meters. Find the energy the person expends pulling the crate, the amount of energy converted to heat via friction, and the increase in the kinetic energy of the crate.

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W=Fs=120•5 = 600 J
W(fr)=100•5=500 J
ΔKE=(120-100)•5=100J

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