A walker of mass 85kg is moving at 3.4mph. m=85kg and vr=3.4mph. What is the kinetic energy of the walker, in joules? If her dog, of mass 7kg, is walking with her, how fast, in meters per second, would it have to be running to have the same kinetic energy?

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First we need to convert the walkers speed from mph to ms 1 mph is equ... View the full answer