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Answer to Question #82291 in Physics for lee strain
Question #82291
if a car has 4000J of kinetic energy, how much work done wound be needed to bring the car to a halt
Expert's answer
change of kinetic energy=work done
ΔKE=KE_f-KE_i=W
Since KE_f=0, we get
W=-KE_i=-4000 J
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