You are riding on a Jet Ski at some angleupstream on a river flowing with a speed of2.8 m/s(a) Suppose the Jet Ski is moving at a speedof 11 m/s relative to the water. At what anglemust you point the Jet Ski if your velocityrelative to the ground is to be perpendicularto the shore of the river? (Note: Angles aremeasured relative to the x axis shown in thefigure.) Express your answer using twosignificant figures.(b) If you increase the speed of the Jet Skirelative to the water, does the angle in part Aincrease, decrease, or stay the same? Explain.(c) Calculate the new angle if you increase theJet Ski speed to 15 m/s. Express your answerusing two significant figures.

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