use radicals to solve the problems. Use a coefficient of friction of 0.4 in the formula from Example 6 and find the speeds of cars that left skid marks of lengths 150 feet, 200 feet, and 350 feet. Express your answers to the nearest mile per hour. Classroom ExampleUsing 0.46 as a coefficient offriction, determine how fast a carEXAMPLE 6Apply Your Skillwas traveling if it skidded 275 feet.Using 0.35 as a coefficient of friction, determine how fast a car was traveling if it skidded325 feet.SolutionSubstitute 0.35 for f and 325 for D in the formula.S = V30Df = V 30(325)(0.35) = 58to the nearest whole numberThe car was traveling at approximately 58 miles per hour.The period of a pendulum is the time it takes to swing from one side to the other sideand back. The formulaLT = 2732where T represents the time in seconds and L the length in feet, can be used to determine theperiod of a pendulum (see Figure 5.1).Figure 5.1

The formula for the value of S is S=30Df First substitute the value of D as D=150 value of f as 0.4…

Answered: Classroom Example Using 0.46 as a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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use radicals to solve the problems. Use a coefficient of friction of 0.4 in the formula from Example 6 and find the speeds of cars that left skid marks of lengths 150 feet, 200 feet, and 350 feet. Express your answers to the nearest mile per hour.

Classroom Example
Using 0.46 as a coefficient of
friction, determine how fast a car
EXAMPLE 6
Apply Your Skill
was traveling if it skidded 275 feet.
Using 0.35 as a coefficient of friction, determine how fast a car was traveling if it skidded
325 feet.
Solution
Substitute 0.35 for f and 325 for D in the formula.
S = V30Df = V 30(325)(0.35) = 58
to the nearest whole number
The car was traveling at approximately 58 miles per hour.
The period of a pendulum is the time it takes to swing from one side to the other side
and back. The formula
L
T = 27
32
where T represents the time in seconds and L the length in feet, can be used to determine the
period of a pendulum (see Figure 5.1).
Figure 5.1

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