Find Min Proj Angle & Max Height of Golf Ball with Initial Speed of 91.1 m/s

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The discussion focuses on calculating the minimum and maximum projection angles and the maximum height for a golf ball launched at an initial speed of 91.1 m/s, landing 186 m away. The minimum projection angle required to achieve this distance, neglecting air friction, is determined to be 6.35 degrees. Participants seek clarification on how to derive the maximum angle and the maximum height using the minimum angle calculated. The conversation emphasizes the need for detailed calculations and methodologies to arrive at these values. Accurate physics principles are essential for solving projectile motion problems effectively.
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A golf ball with an initial speed of 91.1 m/s
lands exactly 186 m downrange on a level
course.
The acceleration of gravity is 9.8 m/s2 .

A)Neglecting air friction, what minimum pro-
jection angle would achieve this result?

Answer 6.35 minimum angle

B)Neglecting air friction, what maximum pro-
jection angle would achieve this result?


C)What is the maximum height reached by the
ball, using the angle determined in part A?


I have found the minimum angle but I can't seem to get the height and max angle correct.
 
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Show your work. How did you get the minimum angle?

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