A 66.8 kg ice skater moving to the right with a velocity of 2.10 m/s throws a 0.119 kg snowball to the right with a velocity of 37.9 m/s relative to the ground. What is the velocity of the ice skater after throwing the snowball

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?