Work, Energy and Power

Physics SS1 First Term
WEEK 10
Work, Energy and Power
Performance Objectives
Students should be able to:
1. Define Work, Energy and Power
2. Show Inter-changeability of Work and Power
Content
Work 
Work refers to an activity involving a force and movement in the direction of the force. A force of 20 Newton’s pushing an object 5 meters in the direction of the force does 100 joules of work.
Work is said to be done whenever a force moves its point of application a distance in the direction of the force.
Work is defined as the product of the force and the displacement in the direction of the force.
W = F x S 
The unit of work…