Energy, Power and Work 2022 Review

Front

What is the definition of power in physics?

Back

Power is defined as the work done on an object divided by the time taken to do the work.

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What is mechanical energy?

Back

Mechanical energy is the sum of all potential and kinetic energy in a system.

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Front

What type of energy is associated with an object's position or condition?

Back

Potential energy.

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Front

How is power calculated?

Back

Power is calculated by dividing work by time.

Front

What is the formula for Kinetic Energy?

Back

KE = 1/2 x mass x velocity².

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Front

What is the unit of power in the International System of Units (SI)?

Back

The unit of power is the Watt (W).

Front

What is the relationship between work and energy?

Back

Work is done when energy is transferred from one system to another.

Front

What is the principle of conservation of energy?

Back

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

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Front

What is the difference between potential energy and kinetic energy?

Back

Potential energy is stored energy based on an object's position, while kinetic energy is the energy of an object in motion.

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Front

What factors affect the amount of kinetic energy an object has?

Back

The mass of the object and the square of its velocity.

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