Physics Experiment 5.docx - Experiment 5 Acceleration...

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Experiment 5: Acceleration Christian Lee 16 March 2017 Location: Home Physics 2425- Spring 2017 Abstract, Experiment, and Observation
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Abstract: Students will form a hypothesis for the pitching velocity of a ball. Then they will use math and spreadsheets to calculate the actual velocity and determine the accuracy of their hypothesis. Students will also roll a large ball to measure its velocity and graph its horizontal motion The objective of this lab was to examine both the horizontal and vertical forces acting on a ball as it rolls down an incline, measure its velocity, and then calculate its rate of acceleration. The lab helped elaborate on Galileo’s studies on the rates of objects rolling down inclines. During the lab, the different forces were able to be visibly seen impacting the marble and it was shown in the data results. The relationship between velocity, distance, time and acceleration was derived through this lab. Experiment: Lab Setup: Materials: Ramp Stopwatch Tape measure Straw String and weight Marble Protractor Computer and spreadsheet program Procedures 1. Set up a ramp as shown in Figure 1. Depending on the length of the board mark off three distances along the ramp, such as 30 cm, 60 cm and 90 cm or 50 cm, 100 cm, and 150
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cm. The wider the spacing on a longer board may give slightly better data. Prepare data and calculation sheets similar to the one that follows. 2. Measure the height of the ramp and record. 3. Measure the angle of the inclined ramp using a protractor. You may use the protractor with plumb line you used in the previous trigonometry experiment (see Figure 2).
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