Question

- Sign In When running a 100 meter race Isaac reaches his maximum speed when he is 40 meters from the starting line, and 5 seconds have elapsed since the start of the race. Isaac continues at this max speed for the rest of the race and is 80 meters from the starting line 10 seconds after the start of the race. a. What is Isaac's max speed? meters per second Preview b. Suppose Isaac runs for an additional 3 seconds after reaching his max speed... i. How far will Isaac travel during those 3 seconds? * meters Preview ii. What is Isaac's distance from the starting line 8 seconds after the start of the race? * meters Preview c. What is Isaac's distance from the starting line 6.5 seconds after the start of the race? * meters Preview

Answer 1

Given Issac runs a 100 meter race He reaches his maximum speed when he is 40 meters from the starting line, and 5 seconds have elapsed since the start of the race. He continue at this mana speed for the rest of the race and is 80 meters from the starting line lo seconds after the start of the race. (a) What is Issac's max speed? He covered the 1st yo meters in 5 see, then he must have covered the lout yom, 10-5 =5 sec. (speed - 40 = 8 m/s (mare speed). during those additional (6); Issac travel 3 seconds is : 3 x 8 m/sec = 24m

O i Issac's distance from the starting line 8 seconds after the start of the race is 140+24 = 64 meters (c) Issae's distance from the starting line 6.5 seconds after the start of the race is going the ato 6.5-5=105 140+(1.5*8) - 52 meters