Solve the all given parts of following problem:
Problem: You are standing in the Bisdorf building stairwell 5.75 m below your lab partner, who throws your calculator vertically upward to you. You catch the calculator 2.3 s later.
Part A: With what initial velocity was the calculator thrown?
Part B: What was the velocity of the calculator just before you caught it?
Any help I can get on this problem is greatly appreciated! I'm not too familiar with this problem.