# Not 45.0

An athlete throwing the javelin use to have a mind set of 45° or less when hand is released for a direction of initial speed to achieve a furthest possible arrival to score as wished.

Now, you are asked to shoot a ball on a rigid tower using a specially made canon. The tower is situated on a ground of a large plan of grass field with no slope. Given that the height of point where the ball is about to be released is 10 m high above the ground, the ball is about to obtain impulse to travel at an INITIAL speed of fixed 10 m/ s with negligible bending or friction, assuming that the constant gravitational acceleration of the projectile is 10 $$m/$$ $$s^2$$ where air resistance is negligible...