A 83 fıreman slides down a 2.7 m pole by applying a frictional force of 448 N against the pole with his hands. If he slides from rest, how fast (in m/s) is he moving once he reaches the ground?

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.