Question: A blue ball is thrown upward with an initial speed of 21.8m/s, from a height of 0.6m above the ground. 2.7 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 13.8m/s from a height of 27.2 meters above ground. Gravity is 9.81 m/s2.
Part A: How long after the blue ball is thrown are the two balls in the air at the same height?
For some reason I keep getting it wrong I don't know if it's a calculation error. Please show your work so I can see what I'm doing wrong above problem!