SOLUTION: Determine the speed of a river. A water wheel has a 10ft radius. To get a good approximation of the speed of the river, you count the revolutions of the wheel and find that it make
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Question 1064334: Determine the speed of a river. A water wheel has a 10ft radius. To get a good approximation of the speed of the river, you count the revolutions of the wheel and find that it makes 14 revolutions per minute. What is the speed of the river in miles per hour?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
determine the speed of a river.
A water wheel has a 10ft radius.
To get a good approximation of the speed of the river, you count the revolutions of the wheel and find that it makes 14 revolutions per minute.
What is the speed of the river in miles per hour?
:
Find the circumference of the water wheel
C =
C = 62.83 ft
Find the distance traveled in 1 minute
14 * 62.83 = 879.646 ft in one minute
or
879.646 * 60 = 52,778.76 ft in 1 hr
convert to mph
= 9.996 ~ 10 mph
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