1.

A train is moving towards East with a speed 20 m/s. A person is running on the roof of the train with a speed 3 m/s against the motion of train. Velocity of the person as seen by an observer on ground will be :A. 23 m/s towards EastB. 17 m/s towards EastC. 23 m/s towards WestD. 17 m/s towards

Answer» Correct Answer - B
Velocity of person as seen by observer `= 20 - 3 = 17 m//s`


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