Acannonball is launched with initial velocity of magnitude v0 over a horizontal surface. at what minimum angle
θmin above the horizontal should the cannonball be launched so that it rises to a height h which is larger than the
horizontal distance r that it will travel when it returns to the ground?
(a) θmin = 76◦
(b) θmin = 72◦
(c) θmin = 60◦
(d) θmin = 45◦
(e) there is no such angle, as r > h for all range problems.