A railroad car of mass 4.0 104 kg moving at 5.0 ms, Ask an Expert

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Q1. A railroad car of mass 4.0 * 10^4 kg moving at 5.0 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.50 m/s.

Q2. The cylindrical space station, 200 {rm m} in diameter, rotates in order to provide artificial gravity of g for the occupants. How much time does the station take to complete one rotation?

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Category:- Physics
Reference No.:- M9219902

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