a 70 kg person takes the elevator ride on the space needle. they travel a vertical distance of 180 m. what is the change in the gravitational potential energy of the person-earth system?

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

explanation:

newton's third law, for every action there is an equal and opposite reaction.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

i think the answer is a, hope this : )