A projectile is fired from ground at an angle 60 degrees above horizontal to hit a target on the wall, which is 25.0 m away. The target is 18.0 m above the ground
(a) Find the initial speed of the projectile;
(b) Find the time of flight of the projectile;
(c) Calculate the magnitude and direction of the projectile's velocity at the instant when it hits the target. (Hint: the projectile may not hit the target horizontally)