IB Maths AA/AI HL. Vectors. Lines. Ex. 1. Application in kinematics, 1May11 2-10.

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Questions from IB Maths Past Papers.
Port A is defined to be the origin of a set of coordinate axes and port B is located at
the point, where distances are measured in kilometres. A ship S1 sails from
port A at 10:00 in a straight line such that its position t hours after 10:00 is given
by r. A speedboat S2 is capable of three times the speed of S1 and is to meet S1 by travelling
the shortest possible distance. What is the latest time that S2 can leave port B?
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can u tell me which year is this questin from?

weeborghini