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Testing (The Design Process):
Testing (The Design Process):
In this step of the design process, the prototype is tested to see the overall performance. Data is analyzed to see if there can be any improvements for later testing and remodeling.
Results:
Results:
As you can see on the left, my racer did not perform as expected. For the distance test, I got 5.3 meters, 5 meters, and then 6.2 meters. The reasons behind the unexpected scores leads back to while I was building the racer. Since balsa wood is very fragile, the wood near the tires broke which made the car go immediately to the right. Another issue was the the shoe lace did not grab onto the marshmallow stick very well so it did not move very far. On the distance, I placed satisfactory but, did not meet the requirement of 1 m/s. It went 0.4 m/s so it scored a 2/4 in fast grading.
Formulas:
Formulas:
What we know so far is the final velocity, initial velocity, displacement, and time. In order to solve for the acceleration we can use the formula: Vf= Vi+at. When the numbers are plugged in it will look like this. 0.43m/s=0m/s+a*4.7s. The 0m/s can be dropped so you're left with 0.43m/s= a*4.7s. Then divide both sides by 4.7 seconds and then you get: a=.091m/s^2
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