00:01
All right, so we're given that the diameter is 26 inches, which means that the radius is equal to 13 inches.
00:07
We have 20 miles per hour.
00:10
We're looking for the angular velocity and radiance per minute.
00:13
We're also looking for the revolutions for a minute.
00:16
So first what we're going to start with is converting the 20 miles per hour into inches per minute.
00:24
So you do that by 20 miles, then hour.
00:34
So for every one hour, you have 60 minutes.
00:42
The hours cancel out here, so now you're miles per minute.
00:47
And then for every mile, there's 5 ,280 feet.
00:54
And for every foot, we have 12 inches.
00:59
So the feet cancel out, the miles cancel out, an hour left in inches per minute...