Albert applies a 10 N force over a distance of 2 m in the same direction as the force for 5 seconds. Bob applies a 5 N force over a distance of 4 meters in the same direction of the force for 1 minute. Which of them does the most work?
A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction is -6.0 Af- 103 J, what is the speed of the skier on reaching the bottom of the slope?
An object slides down a frictionless inclined plane. At the bottom, it has a speed of 9.80 m/s. What is the vertical height of the plane?
At what rate is a 60.0-kg boy using energy when he runs up a flight of stairs 10.0-m high, in 8.00 s?