#12Q Kinetic and Potential Energy

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What is kinetic energy?

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Kinetic energy is the energy that an object possesses due to its motion, 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 of an object due to its position or state, such as gravitational potential energy, which depends on height and mass.

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At which point is kinetic energy greatest in a roller coaster ride?

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Kinetic energy is greatest at the lowest point of the roller coaster, where the speed is highest.

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What factors affect an object's kinetic energy?

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An object's kinetic energy is affected by its mass and velocity.

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How does velocity affect kinetic energy?

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Kinetic energy increases with the square of the velocity; if velocity doubles, kinetic energy increases by a factor of four.

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What is the relationship between mass and kinetic energy?

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Kinetic energy is directly proportional to mass; if mass increases, kinetic energy increases, assuming velocity remains constant.

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Provide an example of kinetic energy in everyday life.

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A tennis ball rolling across the court is an example of kinetic energy.

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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 using the formula PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

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What happens to potential energy as an object falls?

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As an object falls, its potential energy decreases while its kinetic energy increases, assuming no energy is lost to air resistance.

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What is the principle of conservation of energy?

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

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