Police use the formula: V20L to estimate the speed of a car, v, in miles per hour, based on the length, L, in feet, of its skid marks when suddenly braking on a dry, asphalt road. At the scene of an accident, a police officer measures a car's skid marks to be 158 feet long. Approximately how fast was the car traveling? Round your answer to the nearest tenth (one decimal place) of a unit. Answer: The car was traveling at approximately miles per hour. Question Help: D Video D Post to forum

University Physics Volume 1
18th Edition
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Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter1: Units And Measurement
Section: Chapter Questions
Problem 33P: In SI units, speeds are measured in meters per second (m/s). But, depending on where you live,...
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Police use the formula:
v = V20L
to estimate the speed of a car, v, in miles per hour, based on the length, L, in feet, of its skid marks when
suddenly braking on a dry, asphalt road. At the scene of an accident, a police officer measures a car's skid
marks to be 158 feet long. Approximately how fast was the car traveling? Round your answer to the nearest
tenth (one decimal place) of a unit.
Answer: The car was traveling at approximately
miles per hour.
Question Help: Video D Post to forum
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Transcribed Image Text:Police use the formula: v = V20L to estimate the speed of a car, v, in miles per hour, based on the length, L, in feet, of its skid marks when suddenly braking on a dry, asphalt road. At the scene of an accident, a police officer measures a car's skid marks to be 158 feet long. Approximately how fast was the car traveling? Round your answer to the nearest tenth (one decimal place) of a unit. Answer: The car was traveling at approximately miles per hour. Question Help: Video D Post to forum Submit Question fa ho 144 %23 & 4. 6. 7. R. T Y 60 24
Expert Solution
Step 1

Given:

The Length of skid mark L = 158 ft.

The velocity formula is given as,

v=20L

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