You expect your average speed to be 60 miles per hour on this trip. Determine how many hours of driving it will take for you to get to Mackinaw City one-way? The toal of the round trip is 452 miles and it takes 3hrs and 4minutes one way.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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You expect your average speed to be 60 miles per hour on this trip. Determine how many hours of driving it will take for you to get to Mackinaw City one-way? The toal of the round trip is 452 miles and it takes 3hrs and 4minutes one way.  

Expert Solution
Step 1

The average speed is given by

total di stance
Vag
ang
total time
Step 2

Total distance of the round trip is d+d=2d and time while going the trip is T hours and time while returning the trip is 3hr 4minutes.

Then,

2d
Vang
(T+3hr 4 min)
452 miles
60 miles hour
(T+3.0667 hr)
T = 4.466 hours
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