Work and Energy

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What is Work in physics?

Back

Work is defined as the product of force and displacement in the direction of the force. It is calculated using the formula: Work = Force x Distance.

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What is Energy?

Back

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

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What is Kinetic Energy?

Back

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

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What is Potential Energy?

Back

Potential energy is the stored energy of an object due to its position or state. For example, gravitational potential energy is calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

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What is the Law of Conservation of Energy?

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The Law of Conservation of Energy states that energy cannot be created or destroyed, only transformed from one form to another.

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What is Electrical Energy?

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Electrical energy is the energy caused by the movement of electrons. It can be converted into other forms of energy, such as light or heat.

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What is Radiant Energy?

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Radiant energy is the energy of electromagnetic waves, including visible light, infrared, and ultraviolet radiation.

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What is Mechanical Energy?

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Mechanical energy is the sum of kinetic and potential energy in an object. It is the energy associated with the motion and position of an object.

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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 molecules. It is often associated with heat.

Front

How does speed affect kinetic energy?

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The kinetic energy of an object increases with the square of its speed. If the speed doubles, the kinetic energy increases by a factor of four.