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    				| 1. | 
                                    ntA ball collides directly with another ball at rest and is brought to rest by impact . If half of the initial kinetic energy is lost in the impact , then what is coefficient of restitution?n | 
                            
| Answer» ntA ball collides directly with another ball at rest and is brought to rest by impact . If half of the initial kinetic energy is lost in the impact , then what is coefficient of restitution?n | |