COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 7, Problem 75QAP
To determine
How fast (in miles per hour) was car A traveling just before the collision if you have been called to testify as an expert witness in a trial involving a head-on collision?
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You have been called to testify as an expert witness in a trial involving a head-on collision. Car A weighs 1515 lb and was traveling eastward. Car B weighs 1125 lb and was traveling westward at 43.0 mph. The cars locked bumpers and slid eastward with their wheels locked for 17.5 ft before stopping. You have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750.
What speed v (in miles per hour) was car A traveling just before the collision? (This problem uses English units because they would be used in a U.S. legal proceeding.)
You have been called to testify as an expert witness in a trial involving a head-on collision. Car A weighs 1515 lb and was
traveling eastward. Car B weighs 1125 lb and was traveling westward at 42.0 mph. The cars locked bumpers and slid eastward
with their wheels locked for 18.5 ft before stopping. You have measured the coefficient of kinetic friction between the tires and
the pavement to be 0.750.
What speed u (in miles per hour) was car A traveling just
before the collision? (This problem uses English units
because they would be used in a U.S. legal proceeding.)
V =
x10
TOOLS
mph
You have been called to testify as an expert witness in a trial involving a head-on collision. Car A weighs 1515 lb and was
traveling eastward. Car B weighs 1125 lb and was traveling westward at 43.0 mph. The cars locked bumpers and slid eastward
with their wheels locked for 22.5 ft before stopping. You have measured the coefficient of kinetic friction between the tires and
the pavement to be 0.750.
What speed u (in miles per hour) was car A traveling just
before the collision? (This problem uses English units
because they would be used in a U.S. legal proceeding.)
V =
mph
Chapter 7 Solutions
COLLEGE PHYSICS
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