OpenReport02

# OpenReport02 - might accidentally throw it down lightly...

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Open Report 02 Unit 2, class 1: balcony Height In this lab, I am going to use the formula delta x = Vot + 1/2a t^2 Delta x = change in position = height of the building We know the time it takes for the ball to reach the floor and we know the acceleration of the ball = g and initial velocity is 0 because the ball was just drop, it wasn’t throwing upward or throwing downward with any initial speed. The height of the building is: a= -9.8 m/s^2 Vo = 0m/s t= 1.00812 s x= 0(1.00812s) + ½ (-9.8m/s^2)(1.00812s)^2 x= 4.979 meters The height of the building is 4.979 meters Sources of random error: the tennis ball being thrown down instead of being drop down, what we did was did a lot of trials so that we get an accurate timing. Source of systematic error: Air resistance, the air pushing on the ball while the ball is falling might slow the ball down. We drop the ball when there it wasn’t windy. When my partner drop the ball down, he

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Unformatted text preview: might accidentally throw it down lightly without realizing it, adding initial velocity (v0) so that means it takes shorter time to reach the floor, therefore makes our estimation of the building incorrectly. The average value we found for the balcony height was 4.979 meters. I think this is close to the true value because we did a lot of trials to get the timing as accurate as we wanted, so it’s close to 5.00 meters so I think it’s accurate. If I was to do this experiment again, I would try some ball that is heavier because to reduce air resistance. Also, we will try to drop it when the ball is at rest so that we won’t have to worry about the factor of initial velocity involves in the experiment. Because we didn’t have enough time to do 100 trials, next time I would do more trials to get more accurate time and reduce the outlier in the data set. AVG time= 1.00812 (s)...
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## This note was uploaded on 02/01/2011 for the course PHYS 141 taught by Professor Dienes during the Spring '08 term at Arizona.

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OpenReport02 - might accidentally throw it down lightly...

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