Answered: A world record was set for the mens…

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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Question

A world record was set for the mens 100-m dash in the 2008 Olympic Games in Beijing by usian bolt of Jamaica. Bolt coasted across the finish line with a time of 9.69s.

a. If we assume that Bolt accelerated for 2,63s to reach his maximum speed, and maintained that speed for the rest of the race, calculate his maximum speed and his constant acceleration.

b.During the same Olympics, Bolt also set the world record in the 200-m dash with a time of 19.30 s. Using the same assumptions about acceleration time as for the 100-m dash, what was his maximum speed for this race?

Expert Solution

Step 1: Determine the given data:

$Total space distance comma space straight d equals 100 space straight m Total space time comma space straight t equals 9.69 space sec Time space for space acceleration comma space straight t subscript 1 equals 2.63 space sec Time space for space constant space speed comma space straight t subscript 2 equals straight t minus space straight t subscript 1 equals 9.69 space minus 2.63 equals 7.06 space sec$

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