Conservation of 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 is kinetic energy?

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Kinetic energy is the energy of an object due to its motion, calculated as 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 or elastic potential energy.

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What is the difference between kinetic energy and potential energy?

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Kinetic energy is energy of motion, while potential energy is stored energy based on an object's position or condition.

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What is an example of converting electrical energy to thermal energy?

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Ovens, toasters, and heat lamps convert electrical energy into thermal energy.

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How does gravity affect kinetic energy when using a hammer?

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Gravity pulls the hammer down, increasing its speed and thus its kinetic energy, making it easier to drive a nail.

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What is elastic potential energy?

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Elastic potential energy is the energy stored in elastic materials as the result of their stretching or compressing.

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Give an example of elastic potential energy being converted to kinetic energy.

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A windup spring toy converts elastic potential energy into kinetic energy as it unwinds and moves.

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How does mass affect kinetic energy?

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Kinetic energy increases with mass; if two objects move at the same speed, the one with greater mass has more kinetic energy.

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What is the formula for calculating kinetic energy?

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The formula for kinetic energy is KE = 1/2 mv², where m is mass and v is velocity.

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