Friday, April 19, 2013

Simple Machines

What is friction?
When is it helpful, when is it not?Friction Reading and Game
Take the quiz when you are done and see what you know!Friction Racer:
Find the surface that has less friction...
 
What are forces that act around us?
How do you know when you have done WORK?
Is sitting at your computer work? (only read the first section)

...and then there were SIMPLE MACHINES!
 
NOW POST:
1. What are the two types of forces?

2. I am pushing a VERY heavy box, and you are pushing in the opposite direction with the same force, will the box move? Why or why not?

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