A runner expends an average of 4 kcal per minute during a two hour run. She want to eat a meal of 50% energy from carbohydrate, 25% of energy from protein and 25% of energy from fat, how much protein would their meal have to contain, in order to replenish their expended energy?

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explanation:

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the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy