Work, energy and power
Theme: YOU AND ENERGY
Basic science J.S.S.2 Second Term
WEEK 2
Work, energy and power
Performance Objectives
The student should be able to:
- Explain the meaning of work, energy and power
Content
Work energy and power
Work
Work is said to be done when a force applied to an object moves that object.
We can define work as an activity involving a movement and force in the direction of the force. For example, a force of 30 newtons (N) pushing an object 3 meters in the same direction of the force will do 90 joules (J) of work.
When we kick a football, we are exerting an external force called F, and due to this force (kick), the ball moves to a certain distance. This disposition of ball from position A to.... View More
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