Work, Power and Energy

Front

What is work in physics?

Back

Work is done when a force causes an object to move. It is calculated as the product of the force and the distance moved in the direction of the force.

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What is the formula for calculating work?

Back

Work (W) = Force (F) × Distance (d) Measured in Joules (J).

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What is power in physics?

Back

Power is the rate at which work is done or energy is transferred. It is measured in watts (W).

Front

What is the formula for calculating power?

Back

Power (P) = Work (W) / Time (t) Measured in watts (W).

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What is energy?

Back

Energy is the ability to do work. It exists in various forms, such as kinetic, potential, thermal, and sound energy.

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What is kinetic energy?

Back

Kinetic energy is the energy of an object 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 of an object due to its position or state. For example, gravitational potential energy is calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

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What is sound energy?

Back

Sound energy is a form of energy produced by vibrating objects, which creates sound waves that travel through a medium.

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What is a renewable energy source?

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A renewable energy source is one that can be replenished naturally over time, such as solar, wind, and hydro energy.

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What is a non-renewable energy source?

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A non-renewable energy source is one that cannot be replenished in a short period of time, such as coal, oil, and natural gas.