Posted by Anonymous on Thursday, February 10, 2011 at 3:53pm.
a ship is traveling due east at 10 km/h. what must be the speed of a second ship heading 30 degrees east of north if it is always due north of the first ship?

College maths  Chetan sharma, Thursday, September 20, 2012 at 5:52am
10Cos30=11.5km per hour

College Physics :/  thomas, Wednesday, December 2, 2015 at 2:43am
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