Speed Lab
Purpose: The purpose of the lab was to figure out how long the speed of a battery-powered car, a runner, and some other type of a constant motion would take in a set amount of time or set amount of distance. The object was to time how long the constant motion would take to complete the time or distance. By doing so, the motion showed the final speed it traveled per the amount of time.
Average Speeds:
Car
Trial 1: 15 feet / 14 seconds = 1.1 feet/second
Trial 2: 15 feet / 13 seconds = 1.2 feet/second
Trial 3: 15 feet / 14 seconds = 1.1 feet/second
Average: 1.1 + 1.1 + 1.2 = 3.4 / 3 = 1.13 feet/second
Runner
Trial 1: 15 feet / 2 seconds = 7.5 feet/second
Trial 2: 15 feet / 3 seconds = 5 feet/second
Trial 3: 15 feet / 2 seconds = 7.5 feet/second
Average: 7.5 + 5 + 7.5 = 20 / 3 = 6.67 feet/second
Walker
Trial 1: 15 feet / 4 seconds = 3.75 feet/second
Trial 2: 15 feet / 3 seconds = 5 feet/second
Trial 3: 15 feet / 4 seconds = 3.75 feet/second
Average: 3.75 + 5 + 3.75 = 12.5 / 3 = 4.17 feet/second
Car
Trial 1: 15 feet / 14 seconds = 1.1 feet/second
Trial 2: 15 feet / 13 seconds = 1.2 feet/second
Trial 3: 15 feet / 14 seconds = 1.1 feet/second
Average: 1.1 + 1.1 + 1.2 = 3.4 / 3 = 1.13 feet/second
Runner
Trial 1: 15 feet / 2 seconds = 7.5 feet/second
Trial 2: 15 feet / 3 seconds = 5 feet/second
Trial 3: 15 feet / 2 seconds = 7.5 feet/second
Average: 7.5 + 5 + 7.5 = 20 / 3 = 6.67 feet/second
Walker
Trial 1: 15 feet / 4 seconds = 3.75 feet/second
Trial 2: 15 feet / 3 seconds = 5 feet/second
Trial 3: 15 feet / 4 seconds = 3.75 feet/second
Average: 3.75 + 5 + 3.75 = 12.5 / 3 = 4.17 feet/second
Graphs:
Calculations:
Conclusion: The objective of this lab was to
determine the constant speed of motion of a battery-powered car, a runner, and
in this case, a walker. All three trials that were conducted ended up being
about the same amount of time for each motion. The set amount of distance was
15 feet. Each motion traveled relatively the same speed with an exception of
one or two seconds. The lab results did accomplish my theory, which was each
motion would complete its speed the same time for each trial. The data table
shows that for every 15 feet, the motion will go more or less the same speed.
Obviously, a runner is faster than a battery-powered car; and a runner is
faster than a walker. But, everything was set to go the same distance. In
conclusion, the results showed a logical reasoning to figuring out the speed of
the motion(s).
% Error:
Class Avg: 1.18 ft/s - Your avg. speed / Class avg. x 100
1.18 ft/s - 1.13 ft/s
---------------------- x 100 = 4.2%
1.18 ft/s