A 19kg block slides along a frictionless surface at 17ms a, Ask an Expert

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A 1.9kg block slides along a frictionless surface at 1.7m/s . A second block, sliding at a faster 4.9m/s , collides with the first from behind and sticks to it. The final velocity of the combined blocks is 3.1m/s .

Part A What was the mass of the second block?

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