In a rainstorm with a strong wind, what determines the best position in which to hold an umbrella?
Solution to 14DQ When it rains and strong wind is blowing, it is difficult to hold the umbrella. The best position to hold the umbrella is to keep the umbrella facing the incoming wind so that the wind hits the windshield. The umbrella should be in a position which opposed incoming wind and rain. Thus the angle in which the umbrella should be hold is given by the equation,