A rubber ball is shot straight up from the ground with speed . Simultaneously, a

Question

A rubber ball is shot straight up from the ground with speed . Simultaneously, a second rubber ball at height directly above the first ball is dropped from rest.

A:What is the maximum value of h for which a collision occurs before the first ball falls back to the ground? Express your answer in terms of the variable V0 and appropriate constants.

B:For what value of h does the collision occur at the instant when the first ball is at its highest point? Express your answer in terms of the variable V0 and appropriate constants.

Explanation / Answer

I am not sure how to make make the symbolic expression Ball 1: Vf^2 = Vi^2 + 2a(h) h= (Vf^2 - Vo^2) / 2a h= (Vf^2 - Vo^2) / 2(-9.8m/s) Ball 2: Vf^2 = Vi^2 + 2a(h) h= (Vf^2 - Vo^2) / 2a h= (Vf^2 - 0) / 2(9.8m/s) Then make H=H (Vf^2 - Vo^2) / 2(-9.8m/s) = (Vf^2 - 0) / 2(9.8m/s)

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