Background Research My project will test to see if Galileo’s theory was correct, his theory was that a light object of the same mass of another object will fall at the same rate as the other object. The main reason he wanted to conduct his experiment was to see if Aristotle’s theory of gravity which in this case was that objects fall at speed relative to their mass. Most scientist believed that Aristotle was correct but Galileo put it to the test. In my experiment I will replicate Galileo’s experiment. When Galileo did his experiment in the late fifteen hundreds he went to the top of the leaning tower of Pisa with two cannon balls of different weight then dropped them at the same time. His goal was to test Aristoteles theory because Aristotle