Imagine a ball that is pushed off a desk completely horizontal and falls 4.9 m down to the floor. If it landed 3.4 m away from the edge of the desk, how fast was it moving in the vertical direction just before it hit the ground?

Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?