Building a Mousetrap Car for High School Physics Class

[CGC0805]

I am in a high school physics class and have been recently assigned a mouse trap. We were given a mouse trap, that is all, and sent out on our own to create one. The requirements for this specific mousetrap car are to go forward 3 meters, then backwards 2 meters, and finally forward three meters again.
The mouse trap has to be our only source of power and we cannot use a rat trap. Any Suggestions would be great.

 

[kuruman]

Have you looked on the web? There is even a Wikipedia article.

 

[CGC0805]

Yes I did but it doesn't help with the idea of forwards backwards then forwards again

 

[kuruman]

Yes I did but it doesn't help with the idea of forwards backwards then forwards again

Then you should look again.

https://www.docfizzix.com/topics/design-basics/MouseTrap-Cars/mousetrap-reversible.shtml