What is the input force needed to push a 1580 newton snowmobile up a 2.5 long board into the back of a pick-up truck. the bed of the pickup is 1.10 meters high and the board is 80% efficient?

869 Newtons.

What's the gain in Gravitational Potential Energy in this process?

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What's the energy input in this process?

The output of the board is the same as the gain in gravitational potential energy, 1738 Joules.

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moving ball hits still ball. mover stops, hit ball moves. momentum transfer.

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.