Question

*Chapter 2, Practice Problem 2/085 The speedboat B is cruising to the north at 84 mi/hr when it encounters an eastward current of speed vc = 16 mi/hr but does not change its heading (relative to the water). Determine the subsequent velocity of the boat relative to the wind and express your result as a magnitude Vrel and compass direction measured clockwise from north. The current affects the motion of the boat; the southwesterly wind of speed vw = 24 mi/hr does not. 38 B Uc Uw Answers: Vrel = *1 mi/hr 0 = *20

Answer 1

Guien VB -84mlhov Ve= 16 There Vw=24m Ther: 402389 solution assumption = velocity in right & upcerned are positive in itj uzetor Vector form VB 284 For Vws -24.60338 741-24) sin38 ; You = -18-917_140783 writing in VC = 16

From configuration VB+ Vco Viot Veral 843 +167=(-18-93724-1055)4Vrel. 34988498-78] = ved Magnitude of Veel = 134-98798-282 [ Vale/04-8 milho tom o = 34.98 - 0219.5 98.78 0-19:5*
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