5. Sean is running a 100m dash. When the starter's pistol fires, he leaves the starting block and continues speeding up until 7 s into the race, when he reaches his top speed of 11 m/s. He holds this speed for 2s; then his speed has slowed to 10 m/s by the time he crosses the finish line 11 s after he starts the race. a. What was Sean's average acceleration during the first 7 s of the race? b. What was Sean's average acceleration from 7 to 9 s into the race? What was Sean's average acceleration from 9 to 11 s into the race? c.

5. Sean is running a 100m dash. When the starter's pistol fires, he leaves the starting block and continues speeding up until 7 s into the race, when he reaches his top speed of 11 m/s. He holds this speed for 2s; then his speed has slowed to 10 m/s by the time he crosses the finish line 11 s after he starts the race. a. What was Sean's average acceleration during the first 7 s of the race? b. What was Sean's average acceleration from 7 to 9 s into the race? What was Sean's average acceleration from 9 to 11 s into the race? c.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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