SOLUTION: 1. A car travels at 60 miles per hour for 30 minutes. The radius of the tires on the car is 12 inches.
a. How far has the car traveled?
b. How many times does each tire rotate
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Question 863288: 1. A car travels at 60 miles per hour for 30 minutes. The radius of the tires on the car is 12 inches.
a. How far has the car traveled?
b. How many times does each tire rotate in the 30 minutes of driving?
(1 mile = 5,280 feet)
c. What is the rate of rotation (in rpm, rotations per minute) of the tires?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A car travels at 60 miles per hour for 30 minutes. The radius of the tires on the car is 12 inches.
a. How far has the car traveled?
Dist = speed * time
d = 60 * 1/2
d = 30 mi which is 30*5280 = 158,400 ft
:
b. How many times does each tire rotate in the 30 minutes of driving?
The diameter of the tire is 2 ft
C =
c = 6.2832 ft
Find the no. of rotations
= 25,210 revolutions
:
c. What is the rate of rotation (in rpm, rotations per minute) of the tires?
= 840.34 rev/min
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