For my physics class I need to build a car that will travel 6 m and lightly touch a wall. There will be an egg on the front of the car and it can not break. The car must be self propelled from a suspended mass and pulley system. Any design ideas, pictures,... Read More

I removed the panel and got the window out, but found that the clips that attach the window to the pulleys was broken. Now I need to know what the piece is called because when I look up Window Regulators it shows the pulley system, and the clips, and... Read More