Physics, 09.07.2019 15:30 Battboi

The alarm at a fire station rings and an 86-kg fireman, starting from rest, slides down a pole to the floor below (a distance of 4.0 m). just before landing, his speed is 1.4 m/s. what is the magnitude of the kinetic frictional force exerted on the fireman as he slides down the pole?

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