Energy, Work, and Power

Front

What is energy?

Back

Energy is the ability to do work.

Front

What is work in physics?

Back

Work is done when a force causes an object to move in the direction of the force.

Front

What is power?

Back

Power is the rate at which work is done or energy is transferred.

Front

How is power calculated?

Back

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

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion.

Front

What is mechanical energy?

Back

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

Front

How do you calculate gravitational potential energy?

Back

Gravitational potential energy (PE) = mass (m) × gravity (g) × height (h).

Front

What is the unit of energy?

Back

The unit of energy is the Joule (J).

Front

What is the unit of power?

Back

The unit of power is the Watt (W), which is equal to one Joule per second.