Solve the following problem given below:
Problem: A blue ball is thrown upward with an initial speed of 21.2 m/s from a height of 0.6 meters above the ground. Then, 2.6 seconds after the blue ball is thrown, a red ball is thrown downward with an initial speed of 12.7 m/s, from a height of 25.5 meters above the ground. The force of gravity due to the earth results in the balls each is having a constant downward acceleration of 9.81 m/s2.
Part A- How long after the red ball is thrown are the two balls in the air at the same height?
I need tutor help to solve the above problem.