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How is work related to potential energy and kinetic energy?

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The energy acquired by the objects upon which work is done is known as mechanical energy. Mechanical energy is the energy that is possessed by an object due to its motion or due to its position. Mechanical energy can be either kinetic energy (energy of motion) or potential energy (stored energy of position). read more

The potential energy that has been decreased in the car is the bond energy of the fuel. Fuel is being 'burned', i.e. bonds are being broken, and the energy that is released by this process is used to perform work. read more

Likewise, kinetic energy is needed in order to store potential energy in any system. For example, people use potential energy in food to contract muscles that are needed to ride a bike. In this example, the potential energy from food is converted into kinetic energy, the energy of motion of the bicycle. read more

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