Projectile Motion Lab Projectile motion is a form of motion in two dimensions. The objectives of this lab were to study two-dimensional projectile motion, compare experimental results to theory, and to investigate the relationship between horizontal and vertical motion. This lab showed us the effects that gravity can have on an object moving two dimensionally. For my lab, me and my lab partners would be collecting data using LoggerPro, and a Vernier Projectile launcher. There was a total of ten trials for this experiment. For the first five trials, we would shoot the projectile at 50 psi, with the projectile making a mark on a piece of paper where it landed. For the other five trials, we would shoot the projectile at 100 psi to see if there was any changes in acceleration, velocity, or the travel distance of the projectile. After each trial, the data would be transferred to a program on a computer. We would then write down the results in a table so they would be able to be compared. Our results showed us that the higher the psi, the further the ball would shoot and the higher the acceleration, time traveled and velocity. In conclusion, this lab helped us in learning all about two-dimensional motion, especially with projectile motion. The higher the psi, the higher the results. Our original prediction was that the acceleration would be closer to gravity, but both psi’s showed that there would be some error. But after all, we determined that the results would be gravity if tests were done perfectly.