Energy is part of Chapter 7 in our physics book. Work (w) - is the transformation of energy from one form to another. Energy is the ability to do damage. So to calculate energy work = force times distance. So to maximize the work you need a big force for large amounts of distance. So in the picture on the left you can see a car going uphill. The car has a pretty big force because of its mass and it also is going uphill which makes it a big distance.
Thursday, March 19, 2009
Momentum
Newton's Second and Third Law

In this picture you can see a pretty bad car crash. Newton's second law is Force = mass multiplied by acceleration. If you have a big mass then you increase the force. You can also increase the force by increasing the acceleration also. So in this picture you can see that they are two pretty big cars, the black car on the left hand side looks a little more normal than the other maroon hitchback. It is probably because the black SUV has more mass and that increases its force. If you increase mass and acceleration then you will have a really big force.
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