Hi, here is the question:
-A ball is kicked at a house window. The window is 4m up a vertical wall from a horizontal floor. The ball is kicked from a position 12m distance from the foot of the wall. If the ball enters the window at an angle of 30 degrees below the horizontal, find:
1-The time taken to reach the window.
2-The initial speed of the ball.
I am struggling with (1)..
Thank you in advance.