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In an experiment two identical rocks are simultaneously thrown from…

In an experiment two identical rocks are simultaneously thrown from the edge of a cliff a distance h0 above the ground. Rock A is thrown vertically upward with speed v0 and rock B is thrown vertically downward with speed v0 . Rock A and rock B strike the ground at times tA and tB , respectively. 

 

  1. Rock B hits the ground at time tB . Derive an equation for the time tA it takes rock A to hit the ground in terms of v0 tB , and physical constants, as appropriate.

 

  1. Sketch and label graphs of the velocity as a function of time for rock A and rock B. Label the times ½ tAtA , and tB on the graph.

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