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

[jtwilley]

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.

 

[ehild]

Show your work. How did you get the minimum angle?

ehild