Two freight cars of identical mass roll towards each other on a level track. The speed of one car is 2 m/s and the other is 1 m/s. After collision they couple and roll together with a speed of

A. 0.67 m/s.
B. 0.33 m/s.
C. 0.5 m/s.
D. 1.0 m/s.


Answer: C

Environmental & Atmospheric Sciences

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Fill in the blank(s) with correct word

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