1. The problem statement, all variables and given/known data Imagine a mousetrap car with weapons, and that is my physics project for you. It is essentially a 8 foot long hill (8% grade on each side), with opponents' cars facing eachother, racing up, and trying to go over the crest and force the oppenent's car backwards or off. If neither vehicle has crossed the crest or both finish on the sides opposite their starts, another trial will be completed. But, the vehicle nearest to the top (measured from the back end of the vehicle) will be declared the winner for that round. oh and falling off on the spponent's side still counts! It must:(a) go five feet in less than two seconds on a flat surface and, (b) make it up the ramp (no time constraint), be self-propelled, and be 12x8 in. Materials: 8 rubber bands, 2 mousetraps, plywood base, cardboard, 2 coffe cans, 4 2-L plastic bottles, 3 ft dowel, glue, 2 wire coat hangers and 4 jar lids, up to 4- 4oz lead sinkers, AND NOTHING ELSE. What i need is suggestions for 1.propulsion(how to best setup/power the car with rubber bands and/or mousetraps) 2.offense or def.( push other car off/down hill first or prevent the opponent from doing this) 3.weapons(you could go as far as to make trebuchets, but a simple bulldozer will work) 4.weight( where should i put it, and how much) ALL suggestions will be appreciated! HELP ME 2. Relevant equations i dont think there are any. 3. The attempt at a solution i was thinking a 2moustrap setup, but id really like some delayed energy when it really counts at the top, mayb from rubber bands, but i cant think of how to set that up. I was thinking an offensive vehicle with a bulldozer, and maxing the weight out. I will change my mind with good ideas but im probably gonna need a lot of force for this current idea.