Physics - 2327 Words

Experiment Picket Fence Free Fall 5 We say an object is in free fall when the only force acting on it is the earth’s gravitational force. No other forces can be acting; in particular, air resistance must be either absent or so small as to be ignored. When the object in free fall is near the surface of the earth, the gravitational force on it is nearly constant. As a result, an object in free fall accelerates downward at a constant rate. This acceleration is usually represented with the symbol g. Physics students measure the acceleration due to gravity using a wide variety of timing methods. In this experiment, you will have the advantage of using a very precise timer connected to the calculator and a Photogate. The†¦show more content†¦If the acceleration of your Picket Fence appears constant, fit a straight line to your data. a. b. c. d. e. 5-2 Press ENTER , and select RETURN TO MAIN SCREEN from the SELECT GRAPH screen. Select ANALYZE from the main screen. Select CURVE FIT from the ANALYZE screen. Select LINEAR (VELOCITY VS TIME) from the SELECT CURVE FIT screen. Record the slope of the fitted line in the Data Table. Modified from and reported with permission of the publisher Copyright (2000), Vernier Software Technology Physics with Calculators Picket Fence Free Fall f. Press ENTER to see the fitted line with your data. g. To return to the main screen, press ENTER , and then select RETURN TO ANALYZE SCREEN, finally selecting RETURN TO MAIN SCREEN. 9. To establish the reliability of your slope measurement, repeat Steps 6 through 9 five more times. Do not use drops in which the Picket Fence hits or misses the Photogate. Record the slope values in the Data Table. DATA TABLE Trial 1 2 3 4 5 6 2 Slope (m/s ) Minimum Maximum Average 2 Acceleration (m/s ) Acceleration due to gravity, g Precision  ± m/s2 % ANALYSIS 1. From your six trials, determine the minimum, maximum, and average values for the acceleration of the Picket Fence. Record them in the Data Table. 2. Describe in words the shape of the distance vs. time graph for the freeShow MoreRelatedPhysics And Physics Of Molecular Levels1109 Words   |  5 Pagesconsider interaction within a molecule, which had three bodies at least, in terms of quantum and relativistic laws. Facing the fascinating, but, daunting goal, I would have to take step by step to find a practical path. Even I had taken theoretical physics courses and was familiar with special relativity, I did not know much about micro-scale theoretical work. â€Å"Define a problem is the first step for any project. If you are able to define the problem precisely, you are a half way to solve it,† professorRead More Physics in Sports Essay1462 Words   |  6 PagesPhysics in Sports nbsp;nbsp;nbsp;nbsp;nbsp;When many people think of sports, the topic of physics doesnt always come to mind. They usually dont think about connecting athletics with academics. 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According to my physics teacher, both of the equations for a vertically thrown ball y = 1/2gt 2 + v 0 t and y = −1/2gt 2 + v 0 t were correct, which didn’t make much sense to me because the signs were different! However, my view on physics changed dramaticallyRead MoreEssay on A Century of Physics3573 Words   |  15 PagesA Century of Physics By the end of the nineteenth century after more than two thousand years of intellectual struggle that began with the Greek philosophers, physical scientists had reason to believe that they were beginning to understand the universe. Their theories of matter and energy, of electricity and magnetism, of heat and sound and light were confirmed in laboratories throughout the world with increasing precision. 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The following are four examples of situations in The Emperors New Groove where the laws of physics were over looked and ignored in the creation of the scene. #1 (19:05-19:48) After Emperor Kusko is