Problem 3

Description
A red ball slides horizontally off a table as shown in the animation (position is in meters and time is in seconds). Ignore air friction. At the SAME TIME that ball leaves the table, another ball is dropped from the SAME HEIGHT  straight down vertically  from the corner of the table on the right. (Remember to click and drag to find x and y.) The initial horizontal velocity of the ball coming from the left  is magnitude 6 m/s, but can be changed to 7 m/s or 8 m/s.

m/s (Change initial x-component of velocity)

(Hint: Review Ch. 3 ) 
Question 1
Will the horizontally launched  ball hit the vertically falling ball , or should it be launched at an angle below the horizontal to hit the falling ball?
Question 2
How does your answer compare with what you see when you press play and run he simulation ?  Run it for initial horizontal velocity 6 m/s . Repeat the simulation for 7m/s and 8 m/s.  
Question 3
 Explain why the (correct) results of the simulation do not depend on  initial horizontal velocity of the ball coming from the left. 
Reference
See Serway Ch. 3