The planet earth travels in a circular orbit at constant speed around the sun. what is the net work done on the earth by the gravitational attraction between it and the sun in one complete orbit? assume that the mass of the earth is given by me, the mass of the sun is given by ms, and the earth-sun distance is given by res.

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?