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(II) A runner hopes to complete the 10,000-m run in less
Chapter 2, Problem 35P(choose chapter or problem)
(II) A runner hopes to complete the 10,000-m run in less than 30.0 min. After running at constant speed for exactly 27.0 min, there are still 1200 m to go. The runner must then accelerate at \(0.20\ m/s^2\) for how many seconds in order to achieve the desired time?
Questions & Answers
QUESTION:
(II) A runner hopes to complete the 10,000-m run in less than 30.0 min. After running at constant speed for exactly 27.0 min, there are still 1200 m to go. The runner must then accelerate at \(0.20\ m/s^2\) for how many seconds in order to achieve the desired time?
ANSWER:Step 1 of 3
Given data,
Total distance to travel by the runner:
Total time duration to run :
Distance after 27min
Distance to run in next 3 min
Acceleration after 27min
Initial velocity of the runner t=27min is
The runner then accelerates in t seconds, to get to the final velocity,