Physics, 14.06.2021 22:00 miranda911

1 2500kg railroad car moving with a speed of 3 m/s is linked with a 3500 kg railroad car moving away from the first car with a speed by 1 m/s. Both are moving along a straight track. Find the speed of the two cars just after they link up. The answer is 1.83 m/s but I am confused how to solve it to get that.

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1 2500kg railroad car moving with a speed of 3 m/s is linked with a 3500 kg railroad car moving away...

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