Challenge
Challenge " Apply your knowledge of Newton's law of motion, momentum, and energy to design and construct a vehicle that will go as far as possible using an unbalanced force to create motion."
Tuesday, November 8, 2011
Day of Experiments
Up until today I had been leaning towards Design#1. It seems well the coolest, but after my experiment today my choice has changed. Today I did the simple drop a few Mentos into a bottle of Diet Coke experiment. Trying to save Coke and do as many experiments as possible I poured the soda into another bottle. The problem with that is all the gasses that make the reaction occurs are released when being poured. When I poured a small amount of Diet Coke into the bottle and then put Mentos into it the gasses where gone and no reaction occurred. After this happened I opened a new bottle of Diet Coke to make sure that I was understanding the problem and sure enough when I did the experiment in the undisturbed Coke it did exactly what the clips showed. I decided not to use Design#1 for two reasons. One: I would never be able to test my experiment on the actual bottle that I would use in the testing. Two: the amount of Diet Coke and Mentos I would need to do experiments and test would be too much and I would be wasting it.
Design #3: Sling Shot Car
http://www.youtube.com/watch?v=_AySuafZ8to
Design#3
This design uses the idea of Newton's third law. It has the basics of a sling shot. A cardboard or wood square "u" out be built. On it a rubber band would be connected to it on the tips of the shape. the car would be placed inside the shoot and the rubber band and the car would be pulled back. The release of the rubber band would propel the car forward. The equal and opposite force would hopefully build up enough momentum to move it forward the 5 tiles. The car would be made out of two sponges hot glued together with axles and wheels attached in between the two layers.
Design#2
Yesterday I came up with a new design for a newtons scooter. It uses Newton's 2nd Law also known as the Law of momentum. The plan was to use a newspaper with an edge to it and place a small very light car on it. This would we using the idea of the table cloth trick in reverse. By using the newspaper with a lip would make the inverse force not equal. Also using a very light car with large wheels would make it more willing to move and overcome Initial more easily.
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