Jim is pulling a load along a ramp, as shown. The diagram shows the force with which he pulls and the weight of the load. a. Calculate the work done by Jim’s pulling force?

b. What is the gain in potential energy of the load?

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?