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.

Powered by Yahoo! Answers

what are good travel toys for my 17 month old?

travel toys car image

yola_yolli

We are going to the beach this summer its going to be a 6 hour drive. I Know we are going to have to make some stops to stretch and such but I need good car travel toys for my daughter to play with. So if any one has links to toy sites or names of toys that are good for traveling please send them.

Answer
When our son was around that age we purchased one of those kids trays that go over their lap that you can put paper and color on. We bought it at Toys R Us, for about $10. The large sized leggo's help, and so does a good ole DVD player with Baby Einstein movies (This is the only time I will put my little one in front of the TV. Get some kid CD's with songs like the Alphabet song, and all of the classic kid movies. Lastly, McDonalds is a GREAT place to get out. You can get a snack and your little one will get to see other kid's. Good Luck and drive safe!

how to calculate percentage difference between two accelerations of a toy car?

Q. I had to do an experiment whereby we calculated the acceleration of two toy cars, traveling down a slope. One on sandpaper surface and one on smooth surface. Now we are trying to calculate the percentage difference between the two. The acceleration rate on the sandpaper surface is 0.9152m/s/s and the rate for the smooth surface is 1.4194m/s/s. Can anyone help me?

Answer
% Diff = | (x1 - x2)/[ (x1 + x2)/2 ] | x 100

= | (1.4194 - 0.9152)/[ (1.4194 + 0.9152)/2 ] | x 100

= | (0.5042)/ [ (2.3346)/2 ] | x 100

= | (0.5042)/(1.1673) | x 100

= 43.19 %

Powered by Yahoo! Answers