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General
Easy
Question
As shown above, a ball of mass m, suspended on the end of a wire, is released from height h and collides elastically, when it is at its lowest point, with a block of mass 2m at rest on a frictionless surface. After the collision, the ball rises to a final height equal to
- 1/9 h
- 1/8 h
- 1/3 h
- 1/2 h
The correct answer is: 1/9 h
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