A person on a snow sled(total mass of 60.0kg) starts from rest at a vertical height of 24.0m above the bottem of the hill. If aconstant frictional force of 70.0 N opposes their motion as they slide down the hill and the length of the slope is 65.0m, whta is their speedat the bottem of teh hill?
PE = KE + W
mgh = 1/2mv2 + 1/2kx2
The Attempt at a Solution
(60kg)(9.8m/s2)(24m) = 1/2(60kg)v2 + 1/2(70N)(65m)2
14112 = 30v2 +147875