WHO WiNS THE RACE
...lisha and Bert are at running at constant speeds, Alisha at 9.0 m/s and Bert at 8.5 m/s. They cross a “starting line” at the same time. The “finish line” is 100 m away. a) How long does it take Alisha to finish the race? b) How long does it take Bert to finish the race? c. Where is Bert when Alisha crosses the finish line? d. By how many meters does Alisha finish ahead of Bert? Who Wins the Race? Purpose • Review calculating average speed • Review making graphs on the computer. Question Q: Who wins the race? A: I think the runner with the highest average speed would win because they can run fast for a longer period of time. Procedure • See the worksheet Results 1. a)Activity #2 Purpose • to sketch a best fit curve or trend line on a graph on which points have been plotted. • To extrapolate graphs to predict trends beyond available data. • To create graphs of data presented in tabular form. • To calculate the average speed of a runner given distance and time. • To calculate the time required for a runner to travel a specified distance given runners average speed. • To interpret information presented in graphical form. Questions Q: Is it useful to compare track records over many years of time? A: I think that it is useful because it gives you a prediction on how fast the future runners might run. Q: Can future track records be predicted based on past performance? A: I think that they would be depending on records on the scatter graph. Procedure • Pages 9~11 Results 1. a) Ramp Number #1 Distance Time Speed Trial #1 1.2 m 2.53 s 4.32 m/s Trai...