11-12+Kolb

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 * There is no air resistance in outer space so things accelerate much more easily. This is also so because as space crafts travel they loose fuel. Since fuel is 90% of the mass of the space craft, as it decreases in mass it increases in acceleration.**======

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The first thing we did in class today was look over last night’s homework. We filled in a half sheet of paper with the answer to one of the problems, and it was graded for five points. The next thing we did was go over the homework to make sure everyone knew how to do the problems. Last night’s worksheet was on Newton’s 2nd law, and how the mass of an object can change on different planets. We figured out our weight on Earth (in newtons), Mars, Jupiter, and the Moon. It was very interesting to see how my weight changed from planet to planet. The third thing we did today was go over the daily question which I answered above. The last thing we went over was the homework for tonight #1-10 on page 21. This worksheet was all about free body diagrams and how to draw them. A free body diagram is defined as a drawing of an object that shows all of the forces that are acting on it. The forces we talked about were:======