What was the mass of the second block

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A 2.6kg block slides along a frictionless surface at 1.9m/s . A second block, sliding at a faster 5.0m/s , collides with the first from behind and sticks to it. The final velocity of the combined blocks is 3.1m/s .

What was the mass of the second block?

Reference no: EM13315656

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