Question

1 1 Cos N 12. (2 points each) A straight river flows south at a speed of 2 miles per hour. Jim starts swimming from the west side of the river at 4 miles per hour at direction of N 30°E a) Express the true velocity at which Jim is swimming as a component vector. 20-2 J J2,213-2 4 0056 J22,27) b) Find the true speed and direction at which Jim is swimming. 17+JI tan c) Suppose now that Maria starts swimming at 4 miles per hour from the west side of the river. At what bearing e should she swim so that she reaches the other side of the river at a point directly across from her? 1MIFl4-2 -V 16-4- 12 W Mrr 213 2N3

Answer 1

The veluity d CA 4 velocity vecto of river The 2 4 The resultant vector 3 true velocity of the the ma 4- t- VC2-a I16-S3 with a-axis ve do Dire ction of 4-Com ponent- ** compment- tan 23 ian'(23-2) 955

S the required angle Let Froblem aECOdmg to the should reach the other Side he Man at pomt diredly acsoss he should not hare vertical means rector component in regultast velbeity vector c Resae man penenk CosO MSiMe But --C VSine 4 Sine 2 O 2 Sin the vaue f ongle with Hori zontal the

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