A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 73.0-kg water-skier has an initial speed of 7.1 m/s. Later, the speed increases to 10.9 m/s. Determine the work done by the net external force acting on the skier.
Physics - Elena, Monday, February 27, 2012 at 5:20pm
A= KE2 - KE1= (mv2^2)/2 - (mv1^2)/2 =2058.6 J.