A golf ball hit at a speed of 77 m/s will carry (achieve its maximum flight distance of) 256 m when driven at a launch angle of 16 deg. What would be its horizontal range in a vacuum if launched at the same speed and at the same angle ?

Answer 1

probably very close to the same value. A golf ball is designed to minimize drag.

However, if you have some data on air resistance to golf balls, I'm sure you can work it in somehow.

Answer 2

0 = (77sin16 - 4.9t)t
t=0 is trivial, find the other
x = 77cos16 * t