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The centres of three spheres 1,2 and 3 l...

The centres of three spheres 1,2 and 3 lies on a single straight line . Sphere 1 is moving with an initial speed ` v_(1)` directed along this line towards sphere 2. Spheres 2 and 3 are initially at rest. Acquiring some speed after collision, sphere 2 hits sphere 3. Sphere 1 and 3 have masses `m_(1)` and `m_(3)` , respectively , and all the collisions are perfectly elastic and head on . Then.

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