posted by Merlin on .
Wayne pulls a 305 N sled along a snowy path using a rope that makes a 45.0° angle with the ground. Wayne pulls with a force of 42.3 N. The sled moves 16 m in 3.0 s. What power does Wayne produce?
the horizontalforce is 42.3cos45
power= work/time= 42.3cos45 * 16/3 watts