  # chica357

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• Birthday 05/28/1994
1. The methods that students used in the Determining Maximum Height Lab were very inaccurate. There were plenty of ways that an error could occur, which makes the results unreliable. The reasons for this is that using a meter stick to measure pieces of tape that are stuck on the wall isn't a use of modern technology. The technology that was used in a previous lab, which is the motion detector that calculated velocity, distance, etc. could be useful for more accurate results of this lab if it were able to be used to the movement and height of the student who jumps and sticks the tape on the wall. Also, a student's jump might be very different for each trial, and by the 3rd trial their heights could be lower because they are tired from jumping. If better technology was used in this lab the percent error would decrease.
2. Today at Irondequoit High School, history was made. In Mr. Fullerton's physics class, the students were given the task to calculate their maximum displacement. Each student jumped in the air three times and each jump was timed. Holly's first time was .59 seconds, her second jump was .59 seconds again and her third jump was .49 seconds. Her average time came to be .56 seconds. In order to find her maximum displacement, she used the equation d=vit+1/2at^2. This is how she set up the problem: initial velocity: 0 m/s final velocity: displacement: ? acceleration: 9.81 m/s^2 time: . 56/2 = .25 d=(0 m/s)(.56 sec) + (1/2)(9.81 m/s^2)(.25^2) d=0 + (.5)(9.81 m/s^2)(.0625) d=.3065625 Holly's average vertical jump is .31 meters.