Energy is a property of matter that enables it to do work. Energy is an essential aspect of the universe and is found in many different forms.
The two main types of energy are potential energy and kinetic energy.
Potential Energy:
- Potential energy is the energy an object has due to its position or state.
- For example, an object kept on a height has potential energy due to its height above the ground.
- The potential energy of an object depends on its position relative to a reference point, and it increases as the object is moved further away from the reference point.
Kinetic Energy:
- Kinetic energy is the energy of motion. It is the energy an object possesses due to its motion or the speed at which it is moving.
- The kinetic energy of an object is proportional to its mass and the square of its velocity.
EXAMPLES
Potential Energy: example
- A stretched rubber band has potential energy. The more it is stretched, the more potential energy it has stored.
- A book kept on a shelf has potential energy due to its height above the ground.
- A charged battery has potential energy stored in it, which can be used to power electrical devices.
Kinetic Energy: example
- A moving car has kinetic energy due to its motion. The faster the car moves, the more kinetic energy it has.
- A spinning ice skater has kinetic energy due to their rotation. The faster they spin, the more kinetic energy they have.
- A flying bird has kinetic energy due to its motion through the air.