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## JSS2: BASIC SCIENCE - 1ST TERM

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Lesson 5, Topic 3
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# Meaning of Potential and Kinetic Energy

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#### Topic Content:

• Definition of Potential Energy
• Definition of Kinetic Energy
• Calculations on Potential & Kinetic Energy

Mechanical Energy can be divided into two, Potential and Kinetic Energy;

### Potential Energy:

Potential energy may be defined as stored energy. It is the energy of a stationary object due to its position. It is the energy one possesses when one is not moving. It can also be said to be the energy an object or body possesses by virtue of its position, that is when the body is at rest.

Potential energy = mgh

Where m = mass of the object,Â g = gravity, h = metre (distance).

A ball resting on a stool has potential energy.

What happens to the potential energy if the ball is placed on a higher stool?

Answer: The potential energy is greater if the position of the ball is higher. We can say that the ball has the potential to cause more damage. In other words, the greater the distance the higher the potential energy.

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#### Responses

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I need questions about 2 from both potential and kinetic energy

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