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Problem: A red ball is thrown down with an initial speed of 1.5 m/s from a height of 25 meters above the ground. Then, 0.5 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 23.4 m/s, from a height of 0.8 meters above the ground. The force of gravity due to the earth results in the balls each has a constant downward acceleration of 9.81 m/s2.

Part A: What is the maximum height the blue ball reaches?

I need expert help to solve the above problem.

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