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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 3 - Motion in One Dimension > A train is moving at a constant speed V when its driver observes another train in front of him on the same track and moving in the same direction with constant speed v. If the distance between the trains is x, then what should be the minimum retardation of the train so as to avoid collision?

A train is moving at a constant speed V when its driver observes another train in front of him on the same track and moving in the same direction with constant speed v. If the distance between the trains is x, then what should be the minimum retardation of the train so as to avoid collision?

A body travels 200 cm in the first two seconds and 220 cm in the next 4 s with deceleration. The velocity of the body at the end of the 7 s is