Journal entry (10)

09/07/2010 11:38

Today we tested the car again. Testing the car relates to Newtons first law, an object in motion stays in motion unless another force acts upon it, because the car would keep moving if there was no friction on the wheels to stop it. We fixed the car so that we wouldnt have to take off the wheels and adjust the screws to make it turn.So we took a block of wood and stuck it underneath the car and screwed it together then we put 2 hooks on it and put the wheel through it. We did this because whenever we tried to adjust the screws they would fall out. Now we just have to turn the wood that the wheels are on to make it turn, but we have to find the exact angle to twist the wood so that it turns on the track just right. When we find the correct angle we are going to find a way to make it stick in that spot.

<-------Courtney's force diagram of our car going down the track  

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