A sprinter accelerates to his maximum speed in 5 s. He then maintains this speed for the remainder of a 120-m race, finishing with a total time of 9.1 s. Find the runner's maximum speed

University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter3: Motion Along A Straight Line
Section: Chapter Questions
Problem 112CP: In a 100-rn race, the winner is timed at 11.2 s. The second-place finisher’s time Is 11.6 s. How far...
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Topic: straight line motion * There are 2 parts of motion, In the first part, there is acceleration, In the second part, zero acceleration.* attached below is the formula
x-axis :
1 X
= X₁ + vt
X = X₁ + 1/ (√x₁ + Yx*) *
Xi
V₁ = Yi + at
Vf
V₁² =
Х+
V₁² +
Vi
Vi
29 (x+ - Xi)
2a
= Xi + Vit + = at ²
Transcribed Image Text:x-axis : 1 X = X₁ + vt X = X₁ + 1/ (√x₁ + Yx*) * Xi V₁ = Yi + at Vf V₁² = Х+ V₁² + Vi Vi 29 (x+ - Xi) 2a = Xi + Vit + = at ²
A sprinter accelerates to his maximum speed
in 5 s. He then maintains this speed for the
remainder of a 120-m race, finishing with a
total time of 9.1 s. Find the runner's maximum
speed
Transcribed Image Text:A sprinter accelerates to his maximum speed in 5 s. He then maintains this speed for the remainder of a 120-m race, finishing with a total time of 9.1 s. Find the runner's maximum speed
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