Work, Power, and Energy

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What is Work in physics?

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Work is defined as the product of force and the distance over which it acts. It is measured in joules (J).

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What is Power in physics?

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Power is the rate at which work is done or energy is transferred. It is measured in watts (W).

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What is Energy?

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Energy is the capacity to do work or produce change. It exists in various forms, including kinetic, potential, thermal, and chemical energy.

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What is Kinetic Energy?

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Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

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What is Potential Energy?

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Potential energy is the stored energy of an object due to its position or state. It can be gravitational, elastic, or chemical.

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What is Gravitational Potential Energy?

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Gravitational potential energy is the energy an object possesses due to its height above the ground, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

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What is Chemical Potential Energy?

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Chemical potential energy is the energy stored in the bonds of chemical compounds, which can be released during a chemical reaction.

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What is Thermal Energy?

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Thermal energy is the internal energy of an object due to the kinetic energy of its particles, often experienced as heat.

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What is the Law of Conservation of Energy?

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The law states that energy cannot be created or destroyed, only transformed from one form to another.

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How does friction affect work and energy?

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Friction converts kinetic energy into thermal energy, reducing the total mechanical energy available for work.