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January 29, 2015

January 29, 2015

Posted by **Dimitris** on Friday, November 27, 2009 at 12:37pm.

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**SraJMcGin**, Friday, November 27, 2009 at 1:24pm - Navigation -
**Damon**, Friday, November 27, 2009 at 2:49pmRadius of turn = 1 mile

How long is the ship turning to turn 1/4 of a circle?

circumference = 2 pi r = 2 pi miles

so the ship travels pi/2 miles while turning.

speed = 25 mph assume constant

time = distance / rate = (pi/2)/25 = pi/50 hours

so the ship turns 90 degrees in pi/50 hours 1432 degrees/hour

times 1 hour/60 minute = 24 degrees/minute

times 1 minute/60 seconds = 0.4 degrees/second

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