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August 1, 2015

Homework Help: vectors

Posted by Molly on Thursday, February 7, 2013 at 6:27pm.

The position vectors, r km, and the velocity vectors, v km/h, of two boats at a certain time are given by ...
Boat A:at 10:00 am rA=6i+10j vA=8i2j
Boat B:at 10:30 am rB=8i+5j vB=4i+j

... determine the time at which boat B should head out so that the two boats do collide.

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