Question 1121836
Chase runs a 100-meter race. 6 seconds after the race started Chase is 40 meters from the starting line and reaches his max speed; he runs at this max speed for the rest of the race.
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Chase notices that he is 75 meters from the starting line 11 seconds after the race started. 
a. What is Chases max speed?
It took him 6 sec to go the 1st 40 meters, then it took him 5 more sec to go the last 35 meters at the max speed, therefore
{{{35/5}}} = 7 meters/sec is the max speed
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b. Suppose Chase runs for an additional 3 seconds after reaching his max speed..
How far will Chase travel during those additional 3 seconds?
3 * 7 = 21 meters
 What is Chase's distance from the starting line 9 seconds after the race started?
6 sec for the first 40 yds, 21 meters in 3 sec; 21 + 40 = 61 meters in 9 sec
: 
c. What is Chase's distance from the starting line 7.5 seconds after the race started?
6 sec for the first 40 m, 1.5 * 7 = 10.5 meters, 
50.5 m from the starting line in 7.5 sec