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a) In what diretion should the canoeist head to arrive at a position on the other shore directly opposite to his starting position?

b) How Long will the trip take him?

AND

A jogger runs 15km(N 35 degrees E) and then runs 7.5 km (N 25 degrees W) It takes a total of 2.0 hours to run,

a)determine the displacement of the jogger

b)calculate the joggers average velocity

(I have to break this one into x and y components but I just cant seem to get it right).