Aball is thrown with an initial speed of 10. meters
per second. at what angle above the horizontal
should the ball be thrown to reach the greatest
height?
(1) 0° (3) 45°
(2) 30.° (4) 90.°

(4) 90.°

Explanation:

The maximum height reached by the ball depends on the vertical velocity of the ball: the greater the vertical velocity of the ball, the higher the ball will go.

The vertical component of the velocity of the ball is given by:

where

is the initial speed of the ball

is the angle at which the ball is thrown

Therefore, will be maximum when . And by solving this equation, we find that the angle that satisfies this condition is , which corresponds to throwing the ball straight up.

i need the answer to this too but idk it ; -;