A blue ball is thrown upward with an initial speed of 23.9 m/s, from a height of

Question

A blue ball is thrown upward with an initial speed of 23.9 m/s, from a height of 0.9 meters above the ground. 2.9 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 6.8 m/s from a height of 31 meters above the ground. The force of gravity due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s2.

-What is the speed of the blue ball when it reaches its maximum height?
-How long does it take the blue ball to reach its maximum height?

-What is the maximum height the blue ball reaches?

-What is the height of the red ball 3.77 seconds after the blue ball is thrown?
-How long after the blue ball is thrown are the two balls in the air at the same height?

Explanation / Answer

0m/s 2.35 seconds 27.8 meters 21.37 meters above the ground 3.49 seconds

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