Unit 4 Energy Final Review

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What is Kinetic Energy?

Back

Kinetic Energy is the energy an object possesses 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. It is often associated with gravitational energy, calculated using PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

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What is Mechanical Energy?

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Mechanical Energy is the sum of Kinetic Energy and Potential Energy in a system. It represents the total energy available for doing work.

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How does height affect Potential Energy?

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Potential Energy increases with height. The higher an object is, the more gravitational potential energy it has, as it is calculated by the formula PE = mgh.

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What is the relationship between Kinetic Energy and speed?

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Kinetic Energy increases with the square of the speed. Doubling the speed of an object quadruples its Kinetic Energy.

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What is the formula for calculating Kinetic Energy?

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The formula for calculating Kinetic Energy is KE = 1/2 mv², where m is the mass of the object and v is its velocity.

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What is the formula for calculating Potential Energy?

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The formula for calculating Potential Energy is PE = mgh, where m is mass, g is the acceleration due to gravity (9.8 m/s²), and h is height.

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What factors affect Kinetic Energy?

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Kinetic Energy is affected by the mass of the object and its velocity. Increasing either mass or velocity increases Kinetic Energy.

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What is the unit of energy?

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The unit of energy is the Joule (J).

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How do you calculate Mechanical Energy?

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Mechanical Energy is calculated by adding Kinetic Energy and Potential Energy: ME = KE + PE.