Work, Power, and Energy (Physical Science)

Front

What is work in physics?

Back

Work is the transfer of energy that occurs when a force is applied to an object and the object moves in the direction of the force.

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How is power defined 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) where work is in joules and time is in seconds.

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What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration, commonly associated with gravitational potential energy.

Front

What is the formula for gravitational potential energy?

Back

Potential Energy (PE) = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

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What is the relationship between work and energy?

Back

Work done on an object results in a change in energy of that object; energy can be transferred or transformed but cannot be created or destroyed.

Front

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

Back

The unit of work is the joule (J).

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How do you calculate the kinetic energy of an object?

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Kinetic Energy (KE) = 1/2 mv², where m is the mass of the object and v is its velocity.

Front

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.