Use the materials to build prototypes for your two bumpers. Tape a bumper to the box so the ball will hit it properly. Set the box at the foot of the ramp so the bumper is touching the ramp. Then run the test and take measurements using the setup from task 1. Switch bumpers and run the second test. Perform three trials for each test, and record the data in the table. Find the average of the measurements to get a final reading. (For both bumper prototypes, subtract two inches from the average because the bumper changes the starting location of the box by two inches.)