Monday, February 24, 2014

I need to make a toy car travel a certain distance (16m).?




HKC


I am powering the car using a bottle and pumping air into it and then releasing the air. The car will move in a straight line on carpet. I need to know how to CALCULATE how much pressure is required for the car to move 16m. and then calculate the energy stored in the bottle.


Answer
HKC;
Fun project. If you know the air pressure in the bottle, then release the car and measure how far it travels. The distance will be determined by pressure, any friction in the system, including the carpet, and wheel bearings, if any.
Repeated several times and averaged, this will be your empirical data, and you can then determine the distance for other pressures, and car weights, floor surfaces, etc.

Toy Car Race?




LeetKid


Jack, Jill, And Tom each have a battery-operated toy car. The cars always travel in a straight line at a constant rate of speed. They decided to have a race. Each car started at the same time at the beginning of a straight race course. When Jill's car crossed the finish line, it was ahead of jack's car by 24 inches and was ahead of tom's car by 32 inches. when jack's car crossed the finish line, it was ahead of tom's car by 10 inches. How many inches long is the race course?


Answer
120 inches, 32-24=8 and 10-0=10, so Tom falls behind 2 inches for every 24 inches traveled by Jill, by the end Tom is behind by 10 inches so 24x5= 120.




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