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An 16.0 kg couch is pushed with 63 N of force for 14 s. The coefficient of kinetic friction is 0.220 and the coefficient of static friction between the couch and the floor is 0.440.
a) What is the total work done on the couch by the pushing force during those 14.0 seconds.
b) What is the total work done on the couch during those 14.0 seconds.
c) If the couch was instead 32.0 kg, how much work is done on the couch by the pushing force during those 14.0 seconds.
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