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Kinematics

# Kinematics - change in direction on the velocity graph The...

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Kinematics Lab Adam J. Englert September 10, 2008 8:30 – 10:20 Lab Partners: William Cochran, Omar Jabarti, and Majed Almotawa While working in 2-d Kinematics you can simply use an air track, glider and computerized data acquisition system consisting of a computer, interface, and ultrasonic motion detector to calculate some very interesting theory’s about given physics equations. The purpose of this experiment is to investigate the basic equations for constant acceleration in one dimension. I enjoyed comparing my results from this lab to the problems we encounter during our homework assignments. On September 3, my group plotted the graph of V versus t which showed clearly an acceleration of -0.02172. While the three parameters of the plotted graph of X versus t are as follows: a = -0.01709, b = 0.1262 and c = 0.9068. Where the acceleration would equal to twice the value of a which would equate to a value of 0.03418. The accelerations are not equal due to the fact that one is talking about position while the other is taking an opposite

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Unformatted text preview: change in direction on the velocity graph. The initial velocities are equal to zero. The results for the second run down the track were almost identical. You have to take into consideration that they should be equal if you do everything at the exact same time, therefore if it was computer based mechanical arms doing the work the results would be equal. In conclusion, the values of a given run are precise, they do have some error in computing but that error is limited. The values from the two runs are very close and the only difference in them was the human error factor. The data in my graphs are very well described by the equations given. You could plot these equations and see why one is a parabola and the other a straight line. The data isn’t fit by the exponential curve because the initial velocity is equal to zero therefore the exponent will make the value one. Equation three is not valid and should not be used for this type of problem....
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