Physical Science Energy Review

Front

What is work in physics?

Back

Work is defined as the product of force and the distance over which it is applied. It is measured in Joules (J).

Front

How do you calculate work done?

Back

Work (W) = Force (F) × Distance (d).

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state. It has the potential to do work.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the unit of energy?

Back

The unit of energy is the Joule (J).

Front

What type of energy does a compressed spring have?

Back

A compressed spring has potential energy.

Front

What type of energy does a moving car have?

Back

A moving car has kinetic energy.

Front

What happens to potential energy when an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the potential energy an object has due to its height above the ground, calculated as PE = mgh.

Front

What is the relationship between kinetic energy and speed?

Back

Kinetic energy increases with the square of the speed; if speed doubles, kinetic energy increases by a factor of four.