Work and Energy - Physical Science

Front

What is work in physical science?

Back

Work is done when a force is applied to an object and the object moves in the direction of the force.

Front

What is kinetic energy?

Back

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

Front

What two factors determine kinetic energy?

Back

The object's speed and mass.

Front

What is potential energy?

Back

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

Front

What is mechanical energy?

Back

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

Front

What happens to the total energy in a closed system?

Back

The total energy remains constant.

Front

What is power in physical science?

Back

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

Front

How do you calculate power?

Back

Power = Work done / Time taken.

Front

What is the unit of power?

Back

The unit of power is the Watt (W).

Front

What is the formula for kinetic energy?

Back

Kinetic Energy = 1/2 * mass * speed^2.