At time t = 0, a rock climber accidentally allows a piton
Chapter 2, Problem 79(choose chapter or problem)
At time t = 0, a rock climber accidentally allows a piton to fall freely from a high point on the rock wall to the val- '" ley below him. Then, after a short delay, his climbing partner, who is 10 m higher on the wall, throws a piton downward. The 0 2 3 positions y of the pitons versus t t (s) dming the falling are given in Fig.2-40 79. Fig. 2-40. With what speed is the second piton thrown?
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