a.) Calculate the work done (in J) on a 1700 kg elevator car by its cable to lift it 38.5 m at constant speed, assuming friction averages 110 N. b.) What is the work done (in J) on the lift by the gravitational force in this process? c.)What is the total work done (in J) on the lift?

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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.