30 kg box is placed on a 1.9 m tall shelf. a). What is the gravitational potential energy of the box? b). If the box falls off the shelf, what is its kinetic energy as it strikes the ground? (Justify your answer by stating a Law and be specific with the amount of joules of energy- "the same is not a sufficient response")c). What is the velocity of the box immediately before it strikes the ground?

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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.