Sean is running a 100 m dash. When the starter's pistol fires, he leaves the starting block and speeds up until he reaches his top speed of 7.8 m/sec, 6 seconds into the race. He holds this speed for 2 seconds and then gradually slows down until he crosses the finish line 11.1 seconds after he started the race. What was Sean's average acceleration during the fırst 6 seconds of the race, in m/sec2? Express answer accurate to 2 decimal places!
Sean is running a 100 m dash. When the starter's pistol fires, he leaves the starting block and speeds up until he reaches his top speed of 7.8 m/sec, 6 seconds into the race. He holds this speed for 2 seconds and then gradually slows down until he crosses the finish line 11.1 seconds after he started the race. What was Sean's average acceleration during the fırst 6 seconds of the race, in m/sec2? Express answer accurate to 2 decimal places!
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Sean is running a 100 m dash. When the starter's pistol fires, he leaves the
starting block and speeds up until he reaches his top speed of 7.8 m/sec, 6
seconds into the race. He holds this speed for 2 seconds and then gradually
slows down until he crosses the finish line 11.1 seconds after he started the
race. What was Sean's average acceleration during the fırst 6 seconds of the
race,
in m/sec2?
Express answer accurate to 2 decimal places!
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