Work, Power, Energy

Front

What is the principle of conservation of energy?

Back

Energy is not created or destroyed; it can only be transformed from one form to another.

Front

What happens to potential energy when an object falls?

Back

The potential energy decreases as the object falls.

Front

How is energy defined in physics?

Back

Energy is the ability to do work.

Front

What is the total mechanical energy of an object?

Back

The sum of its potential energy and kinetic energy.

Front

What is the SI unit of work?

Back

Joules (J).

Front

What is power in terms of work?

Back

Power is the rate at which work is done.

Front

What is the SI unit of power?

Back

Watts (W).

Front

How do you calculate work done?

Back

Work = Force x Distance.

Front

What is kinetic energy?

Back

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

Front

How is kinetic energy calculated?

Back

Kinetic Energy = 1/2 mv², where m is mass and v is velocity.