Question

we call energy that is moving or can do work for us mechanical energy. this energy is either doing work or has the potential to do work, which brings us to the two types of mechanical energy: kinetic and potential. the energy of an object in motion is kinetic energy; the energy of an object that has potential to move is potential energy. the amount of kinetic energy an object has depends on its mass and its speed. imagine a truck, a baseball and a spitball flying toward you. the baseball and the spitball may be traveling at about the same speed, but since the baseball has more mass, it has more kinetic energy. if it hits you it will hurt, while the spitball will simply go splat. the truck has far more mass and kinetic energy than the baseball and spitball combined. potential energy is stored energy. an object has potential energy if its able to move and thus capable of doing work. a stretched rubber band has potential energy, as does a gymnast standing on a balance beam and a water balloon held out a window. which of these objects has kinetic energy? a a skateboard rolling up a ramp b a car parked on top of a hill c a dish placed near the edge of a table

Explanation:

Kinetic energy is the energy of an object in motion. A skateboard rolling up a ramp is in motion, while a car parked on a hill and a dish near the edge of a table are stationary.

Answer:

A. a skateboard rolling up a ramp