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Two students were given a physics proble...

Two students were given a physics problem for finding maximum extension of spring if blocks are imparted velocities `v_(1)` & `V_(2)` when spring is unstrected.
By Students A: `1/2m(v_(1)+v_(2))^(2)=1/2kx^(2)`
By Students B: `1/2mv_(1)^(2)+1/2mv_(2)^(2)=1/2kx^(2)`

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