Tossed Ball Experiment

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In our “Motion of a Tossed Ball” experiment, our graphs exhibited shapes that we expected to see in a position vs. time (inverted parabola), velocity vs. time (line with a negative slope), and acceleration vs. time (flat line) graph. We found our graphs and data to be exceptionally supportive of the physics concepts outlined in the pre-lab section of this report—at maximum height, the velocity of the ball was found to be 0 m/s and the acceleration (9.1 m/s2) was found to be close the standard value of g (9.8 m/s2). We also found the slope of the line for the velocity vs. time graph to be roughly equal to the standard value for g, which is consistent with the idea that v’(t) = a(t). We found our calculated values of g from the position vs. time, velocity vs. time, and acceleration vs.…show more content…
time, velocity vs. time, and acceleration vs. time graphs to be -9.23 m/s2, -9.23 m/s2, and -9.10 m/s2 respectively. These values were to be expected, as they are very close to the standard value of g, which is 9.8 m/s2. We found our percent errors to be 5.3%, 5.3%, and 7% for our position vs. time, velocity vs. time, and acceleration vs. time graphs, respectively. Sources of error may have included human error: not tossing the ball high enough for accurate readings, not moving one’s hands out of the way after having tossed the ball, or not throwing the ball straight above the motion detector. Sources of error may have also occurred from instrument limitations and incorrect calibrations from the detector. For the “Picket Fence” experiment, we found the values of g to be 9.76 m/s2 in our position vs. time graph, and 9.78 m/s2 in our velocity vs. time graph. These values of g were to be expected, as they are very close to the standard value of g, 9.8 m/s2. These numbers illustrate how the acceleration of an object is constant due to the force of gravity. Our standard deviations were found to be 0.046 and 0.03 for our position vs. time and velocity vs. time graphs, respectively.
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