Answer to Question #114807 in Classical Mechanics for Monica Kucher

Question

A wagon has a mass of 20 kg and is pulled at an angle of 16 degrees from the horizontal by a motor with a force of 100 N. Because of this force, the wagon is moving at a constant, horizontal speed of 5.0 m every two seconds. What is the power output of the motor pulling the wagon?

Answer 1

$$P=Fv\cos{16}=(100)(2.5)\cos{16}=240\ W$$