Two toy cannons are mounted right next to each other. The first cannon launches a small ball upward, with an initial velocity of 22.0 m/s. 1.5 seconds later, the second cannon launches a second ball upward, also at 22.0 m/s. The two balls collide in the air.
a) Find the height above the cannons where the ball's collide.
b) Find the velocity of each ball when the two collide. Let upward be considered the positive direction for this problem.