4. A steel ball weighing 1.0 lb is fas- tened to a cord 27 in long and is re- leased when the cord is horizontal. At the bottom of its path the ball strikes a 5.0 lb steel block initially at rest on a frictionless surface as in Figure 1. The collision is elastic. Find: (a) the speed of the ball (b) the speed of the block just af- ter the collision

4. A steel ball weighing 1.0 lb is fas- tened to a cord 27 in long and is re- leased when the cord is horizontal. At the bottom of its path the ball strikes a 5.0 lb steel block initially at rest on a frictionless surface as in Figure 1. The collision is elastic. Find: (a) the speed of the ball (b) the speed of the block just af- ter the collision

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter11: Energy And Its Conservation

Section11.2: Conservation Of Energy

Problem 21PP

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