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# lab2 - Jeff Trask Section A PHY 110 Lab 2 1-D Motion...

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Jeff Trask 9/7/2007 Section A PHY 110 Lab 2: 1-D Motion: Measuring g Purpose: The purpose of this lab is to experimentally determine the acceleration due to gravity on Earth, then compare our result to the accepted value, 9.80 m/s 2 . Abstract: In order to measure the position of the falling object, a series of sparks are set off by the apparatus at constant intervals that leave markings on a peace of tape. Measuring the distance between every third marking provides us with the distance the object falls in 1/20 th of a second. Once the position has been found, the velocity of the object can be determined, using the equation v = Δ s t , or velocity equals the change in position divided by the change in time. The math shows what we already knew, that the object increases velocity as it falls, becoming almost 7 times faster over a period of 7/20 th s of a second. Now that the velocity has been determined, the average acceleration due to gravity can be determined using the formula a = Δ

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lab2 - Jeff Trask Section A PHY 110 Lab 2 1-D Motion...

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