Thanks for the wheel idea people...its significantly incresed the distance of my vehical. Other students who tried wheels such as skate board wheels didnt go far at all because of too much surface area. My vehical went about 5 meters when others went about 1...if that. They had poor designs with...
Im sorry, i mistated myself: The weight cannot shift position on the vehicle- it must remain still on the vehicle while it travels.
For example: I cannot construct a vehicle that uses the swinging motion of the weight as a way to keep it in motion. It has to remain still on the vehicle.
A Rubber Band??
OK...i need your help people... i have to construct a vehical that can transport a 1 Kg weight over 10 meters using any materials i please...here's the catch: Its only source of power can be a size-10 rubber band! It can have no other source of power and it cannot be launched...