Confusing projectile motion problem -- need guidance Here is the picture of the diagram. The Question: A woman throws a ball at a vertical wall d = 3.6 m away. The ball is h = 1.8 m above ground when it leaves the woman's hand with an initial velocity of 16 m/s at 45°. When the ball hits the wall, the horizontal component of its velocity is reversed; the vertical component remains unchanged. (Ignore any effects due to air resistance.) (a) Where does the ball hit the ground? m (away from the wall) (b) How long was the ball in the air before it hit the wall? s (c) Where did the ball hit the wall? m (above the ground) (d) How long was the ball in the air after it left the wall? s What I have done so far Ok, this problem is very complicated for me so I am going step by step, so if anyone can guide me through this, Im grateful. The triangle made from the person throwing the ball, the hyp. is 16, I figured out the adjacent and the opposite by use sin45*16 and cos45*16 which is 11.3. For Question A How long was the ball in the air before it hit the wall? I am having trouble conceptualizing this, will the velocity be 0 before it hits the wall? if it is, I can do change in velocity = A*T and that ='s to 1.6s but how do I find if this is correct? Or there is something I am not seeing.