by Adam Ransom Uniform Motion Uniform Motion in a Skateboard Velocity vs. Time Graph for Uniform Motion of a Skateboard What is uniform motion? 0ft Distance vs. Time Graph for Uniform Motion 5 This shows uniform motion because the velocity is constant throughout the graph. The values given are proportional. The velocity of this graph is 5 feet per second. The proportional values show an upward change in velocity. When an object is able to move through distances of equal measure moving at a constant speed and time. 25ft 50ft 75ft 100ft The skateboard travels from the start (at 0ft) to the end points (at 100ft) in ft intervals each time it crosses a point. Every 5 seconds, the skateboard reaches 25ft. The skateboard has uniform motion because it crosses an equal distance of 25 feet five times every time 5 seconds elapses. (cc) image by anemoneprojectors on Flickr Time 0 75 25 50 0 5+7= (cc) image by anemoneprojectors on Flickr Distance 5+7= (cc) image by anemoneprojectors on Flickr 100 5 10 15 20 The table shows that the skateboard has uniform motion because it shows that the skateboard crossed equal distances of 25 feet every 5 seconds. It took 20 seconds overall to complete the test. 10 15 20 The graph shows uniform motion because it matches the line of best fit going vertical, and like the previous options, the values are proportional and go through 25 feet every 5 seconds Required Math Calc. Velocity: xf-xi

tf - ti 100 - 0

20 - 0 = 100

20 5 ft/s = Calc. Slope rise

run displacement

time interval = = 100

5 = 20 ft/s The velocity is related to the slope of the distance vs. time graph because the slope represents the rate at which the velocity is changing at.

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# Uniform Motion Transfer Task

For Ms. Lowe

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