Building a car in AP Physics, Need Suggestions!! 1. The problem statement, all variables and given/known data Hello, I am in need of suggestions on a project that was recently assigned to my AP Physics class. The challenge was to make a "Tank" (any vehicle) that will go down a ramp, shoot a projectile over a 1.5ft wall, and go back up the ramp. The instructions of this project are as follows: -The ramp is 12 feet by 2 feet wide and at a 20 degree slope to the horizontal. -No incendiaries allowed. -Electricity can be used, but cannot exceed 3V (2 AA batteries) -The vehicle must stop in the "stopping zone" that is 12 inches long by 8 inches wide starting 18 inches from the bottom of the ramp. -A 1.5ft wall is to be placed at the bottom of the ramp. -The vehicle must shoot a projectile (minimum of .5in diameter, maximum of 1 inch, but not limited to spheres) over the wall and must hit a target placed 10 feet away from the wall. -The vehicle may not be interfered with until the run is over. -No guiding devices may be used (ie; strings, pulleys) As you can see, there are not a lot of methods we can utilize, but I am willing and grateful for any suggestions anyone may have. Thank you. 2. Relevant equations None. 3. The attempt at a solution Other than some preliminary sketches of our ideas, our group really doesn't have any idea where to start.