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Simple Machines

What Is Work?

What Is Work?
Reading Level
     edHelper's suggested reading level:   grades 3 to 6
     Flesch-Kincaid grade level:   3.52

Vocabulary
     challenging words:    direction, doing, amount, rocks, lift, speed, several, against, inch, arms, specific, mind, cause, test, suppose, along

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What Is Work?
By Cindy Grigg 		  
1     What do you think work is? You might think that taking a test is work. But scientists have something very specific in mind when they use the word "work." Work is what is done whenever a force makes an object move some distance.
 
2     A force is a push or a pull. A force can cause an object to move that was standing still before the force acted on it. A force can change the way an object moves.
 
3     Changing the direction of the force can make the object move in a different direction. You can also change the speed of an object. You can make an object move faster by using more force.

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