Work, Energy, and Power

Front

What is Work in physics?

Back

Work is defined as the product of force and the distance over which it acts, in the direction of the force. It is measured in joules (J).

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What is the formula for calculating Work?

Back

Work (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and the direction of motion.

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What is Energy?

Back

Energy is the capacity to do work. It exists in various forms, including kinetic energy, potential energy, thermal energy, etc.

Front

What is Kinetic Energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated using the formula KE = 0.5 × mass (m) × velocity (v)².

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What is Potential Energy?

Back

Potential energy is the stored energy of an object due to its position or configuration, commonly calculated as PE = mass (m) × gravity (g) × height (h).

Front

What is the Law of Conservation of Energy?

Back

The Law of Conservation of Energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

How does mass affect Kinetic Energy?

Back

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

Front

How does speed affect Kinetic Energy?

Back

Kinetic energy is proportional to the square of the speed; if speed triples, kinetic energy increases by a factor of nine.

Front

What is Power in physics?

Back

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

Front

What is the formula for calculating Power?

Back

Power (P) = Work (W) / Time (t).