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Sahay Sir > Question Answers > MTG NEET Physics > Part 1 > Chapter 3 - Motion in One Dimension > A 175 m long train is travelling along a straight track with a velocity 72 km−1 h. A bird is flying parallel to the train in the opposite direction with a velocity 18 km−1 h. The time taken by the bird to cross the train is :

A 175 m long train is travelling along a straight track with a velocity 72 km−1 h. A bird is flying parallel to the train in the opposite direction with a velocity 18 km−1 h. The time taken by the bird to cross the train is :

A person walks up a stationary escalator in t1 . If he remains stationary on the escalator. Then it can take him up in t2. How much time would it take him to walk up her moving escalator ?