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4A 80.0-kg Fireman Slides Down A 3.00-m Pole By Applying A Frictional Force Of 400. N Against The Pole With His Hands. If He Slides From Rest, How Fast Is He Moving Once He Reaches The Ground? - Math Discussion

4A 80.0-kg fireman slides down a 3.00-m pole by applying a frictional force of 400. N against the pole with his hands. If he slides from rest, how fast is he moving once he reaches the ground?