Physics exp. 3 Projectile Motion

Physics exp. 3 Projectile Motion - Projectile Motion Phys...

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Projectile Motion Phys 104 444 and TA: Pengyi Zhang February 14, 2008 Sheryl Payne Partner: Ben Wright The work presented in this report is my own, and the data were obtained by my lab partner and myself during the lab period. __________________
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Abstract The purpose of this experiment was to observe a projectile’s motion, which is the motion of an object launched and only the force of gravity and air friction acted on it. By using Newtonian mechanics principles, we were able to predict the range, 1.9333m, and the time-of- flight, 0.6677s. In part 1, a ball was launched at 0°, from a table and by using one photogate at the initial position and a landing pad was placed where the ball hits the floor; the time of flight was measured. The initial velocity was calculated. In part 2, the ball’s initial velocity was directly measured by connecting two photogates 0.1010±0.0005m apart. The time-of-flight was measured by the photogates, 0.0302±0.0001 s, and the initial velocity was found, 3.3444±0.0005m/s. Then the launcher was set at 30° and by using one photogate and the landing pad, the time-of-flight was measured. Carbon paper was used to mark the horizontal distance measured for each trial. Finally, the initial velocities were calculated. The theoretical range and the time-of-flight were 1.9333m and 0.6677s respectively. The experimental range and time-of- flight were 1.8583±0.0027m and 0.6642±0.0009s respectively. The relative error was -3.8793% for range and -0.5242% for time-of-flight. The experiment helped to verify Newton’s principles. Data Analysis and Results
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Physics exp. 3 Projectile Motion - Projectile Motion Phys...

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