Mechanical energy review

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What is mechanical energy?

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

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What is kinetic energy?

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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?

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Potential energy is the stored energy in an object due to its position or state. For example, an object held at a height has gravitational potential energy.

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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 happens to kinetic energy as an object falls?

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As an object falls, its kinetic energy increases due to the acceleration caused by gravity.

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What is conduction?

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Conduction is the transfer of thermal energy through direct contact between materials, typically occurring in solids.

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What is convection?

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Convection is the transfer of thermal energy through the movement of fluids (liquids and gases) caused by differences in temperature and density.

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What is radiation?

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Radiation is the transfer of energy through electromagnetic waves, which can occur in a vacuum, such as sunlight reaching Earth.

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What is a good conductor of heat?

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A good conductor of heat is a material that allows thermal energy to pass through it easily, such as metals like copper and gold.

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What is an example of energy transformation?

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An example of energy transformation is a falling book, where gravitational potential energy is converted into kinetic energy, and then into sound and heat upon impact.