FREE FALL Theory Objects fall toward the earth’s surface. We have all heard the Sir Isaac Netwon story with the apple and the apple tree (you have forgot it). We know that the further an object falls...

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FREE FALL Theory Objects fall toward the earth’s surface. We have all heard the Sir Isaac Netwon story with the apple and the apple tree (you have forgot it). We know that the further an object falls the faster its speed will be. When an object is in Free Fall, the air resistance is not considered because it is much less that pull of gravity. In Free Fall an object moves towards the surface of the earth with a uniform accelerated motion due to gravity, ag. In this experiment you will calculate the average acceleration due to gravity on an object in free fall. Equipment Needed:  golf ball, baseball or tennis ball (don’t use something light like a Ping-Pong ball)  a 6 foot piece of tape, marked at 2 feet, 4 feet, and 8 feet  a stop watch (use the one on your cell phone or borrow someone’s cell phone that has one)  a helper drop the ball on your command Procedure Attach the piece of tape to a wall and mark with a pen at 0 feet (furthest from the floor), 2 feet, 4 feet, and 8 feet. Mark a fairly heavy line that is easily seen from 10 feet away. A Sharpie marker is ideal for this. (See pics below). Have your helper hold the ball exactly at the 0 feet mark with two fingers. On your command, you hit the start button on the stopwatch and your helper releases the ball. It is critical that you don’t start until your helper actually released the ball! You hit the stop button once the ball has traveled to the desired distance. Practice at the 4 foot line several times. You should be able to reproduce the time within 0.10 seconds with a little practice. See demo at: http:/youtu.be/ogdqxMNjovc Record the time required for the ball to fall in Free Fall from 0 to 2 feet. Write the result on a piece of paper. Repeat the experiment enough times so that you collect 5 replicates that are all within 0.10 seconds of each other. Discard all of the outlying data points. Repeat with 5 replicates within 0.10 seconds at 0-to-4 and 0-to-8 feet. http://youtu.be/ogdqxMNjovc Treatment of Data • Create a data table the list the 5 replicates at each distance. • Calculate the average time for each distance (2, 4, and 8 feet). • Using the Free Fall equation rearranged for acceleration (right hand side), calculate the acceleration due to gravity at each distance. Input the distance (d) in feet and the average time (t) in seconds at the corresponding. Be sure to square the time as shown in the equation. ? = 1 2 ???2 → ?? = 2 ? ?2 • List each of the all three calculated accelerations in your report. Questions Create a Word document in the format Laboratory Report Guidelines. Be sure to include all relevant sections. Answer the questions below in your report and save the document with the name: Free Fall. 1. List the experimental acceleration due to gravity that you measured at each distance. 2. Which value do you believe is the most accurate? 3. What factors do you believe contribute to experimental error in this measurement? 4. What could be done to improve the quality of the result? How could change the experiment? In the Free Fall experiment folder, click on the Assignment link, locate and upload your document named "Free Fall", then click Submit. You can use this link one time only, so please make sure you submit the correct document the first time. Name: Summer BucknerDate: November 9, 2019 Lab Title: Free Fall Problem Statement: Background Knowledge: Hypothesis: Experiment: Data: Graph: Questions: 1. List the experimental acceleration due to gravity that you measured at each distance. 2. Which value do you believe is the most accurate? 3. What factors do you believe contribute to experimental error in this measurement? 4. What could be done to improve the quality of the result? How could change the experiment? Conclusion: