A ball is projected horizontally from the top of a building.One second later another ball is projected horizontally fromthe same point with the same velocity.
a. At what point in the motion will the balls be closest to each other?
b. Will the first ball always be taveveling faster than thesecond ball?
c. What will the time difference be when the balls hit the ground?
d. Can the horizontal projection velocity of the second ballbe changed so that the balls arrive at the ground at thesame time?