The position vectors, r km, and velocity vectors, vkm/h, of two boats at a certain time are given by

Boat A: 10 am, r(a) = 6i+10j, v(a) = 8i-2j

Boat B: 10:30 am, r(b) = 8i+5j, v(b) = 4i+j

If the boats collide, find the time when they collide as well as the position vectors of the point of collision.
If the boats do not collide, determine the time at which Boat b should head out so that two boats collide?

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