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A body of mass m moving with velocity V collides head-on with another body of mass 2m which is initially at rest. The ratio of K.E of colliding body before and after collision will be:
A body of mass m moving with velocity V collides head-on with another body of mass 2m which is initially at rest. The ratio of K.E of colliding body before and after collision will be:

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5 years ago

noogler
489 Points
```							3:1as the particles undergom head on collision first and second body moves with cmmon velocity mv+2m(0)=(m+2m)vl ….......................by the conservation of momentumvl=v/3 initial K.E............1/2mv2final K.E..............1/2(m+2m)(vl)2=1/2(3m)(v/3)2=1/6mv2K.Ei /K.Ef=3/1
```
5 years ago
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• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions