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Constant Motion Lab

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by

Caleb Anderson

on 13 September 2012

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Transcript of Constant Motion Lab

Caleb Anderson,
Megan Rink,
Hunter Kothenbeutel,
Sam Clarke

Monday, September 10, 2012 Constant Motion Lab Intro We set up a track with a tape ruler on it and hooked up two gates to the smart timer. The gates track the time it takes for the car to pass from one gate to the other. The car was pushed by hand at a steady rate for each trial, trying to keep a constant speed. The times were recorded for distances starting from 20cm and increasing to 100cm. The distance was increased by 20cm after three trials at each distance. The times were recorded three times and averaged for each of the five distances. Method Conclusion Velocity vs Time Representation Question: What is the relationship between distance and time?
Purpose: Find the velocity of an object in motion using distance and time.
Hypothesis: As the distance increases, the velocity will stay the same. velocity (cm)(s)^2
43.34
43.81
48.21
43.71
47.52
average: 45.32 (cm)(s)^2 Data; Velocity Data Initial data collected The three times were averaged for each distance and used to make a graph The data shows that as the distance increases, the time increases proportionately. The velocity varies slightly between trials because of human error. A human had to push the car nearly the same speed for each trial. Given that variable, the velocities are all remarkable close, with only two out of the five velocities being out of the range. With distances as short as the ones tested, the velocity stays about the same and doesn't decrease over the longer distance. Our hypothesis was accepted because as the distance increased, the velocity stayed the same. This could be applied in the real world with crash test tracks for vehicles. The car needs to keep the same velocity down the track in order to hit the other vehicle at the intended velocity. The velocity of the car in motion can also be calculated using the distance of the track and time of travel. Hypothesis and
Real world Applications The velocity was found by dividing the total distance traveled by the time it took for the car to go that distance. The data shows that as the distance increases the time increases as well. The velocity fluctuates slightly but stays about the same. Analysis
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