If a soldier wants to shoot a projectile as far into enemy territory

as possible over level ground, at what angle from the ground should the projectile be shot?

W) 0\({}^{\circ}\)

X) 30\({}^{\circ}\)

Y) 45\({}^{\circ}\)

Z) 60\({}^{\circ}\)
Y) 45\({}^{\circ}\)