You drop a sphere of mass 14.0 grams from a height of 13.0 m above the ground into free fall. As the mass falls, which of these best describes what is happening to the gravitational potential energy relative to the ground and the kinetic energy of the sphere?   a. the gravitational potential energy relative to the ground decreases, and the kinetic energy increases   b. the gravitational potential energy relative to the ground and the kinetic energy remain the same   c. the gravitational potential energy relative to the ground increases, and the kinetic energy decreases

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Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.