Kinetic and Potential Energy

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What is Kinetic Energy?

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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?

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Potential Energy is the stored energy in an object due to its position or state. The most common type is gravitational potential energy, calculated as GPE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

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How do you calculate Kinetic Energy?

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Kinetic Energy (KE) is calculated using the formula KE = 1/2 mv², where m is the mass of the object and v is its velocity.

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What is Gravitational Potential Energy?

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Gravitational Potential Energy (GPE) is the energy an object has due to its height above the ground. It is calculated using the formula GPE = mgh.

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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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What factors affect Kinetic Energy?

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Kinetic Energy depends on two factors: the mass of the object and its velocity. Increasing either mass or velocity increases the kinetic energy.

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What is the relationship between height and Potential Energy?

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The higher an object is above the ground, the greater its potential energy. This is because potential energy is directly proportional to height.

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What happens to Kinetic Energy when speed doubles?

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If the speed of an object doubles, its kinetic energy increases by a factor of four, since KE is proportional to the square of the velocity.

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What is an example of Kinetic Energy?

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A tennis ball rolling across the court is an example of kinetic energy, as it is in motion.

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What happens to energy when a matchstick is lit?

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When a matchstick is lit, the chemical bonds in the match are broken, releasing energy in the form of heat and light.