NEET UG PHYSICS MCQ: MOTION IN A STRAIGHT LINE

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Two trains 101 m and 99 m in length are running in opposite direction with velocities 54 km/h and 36 km/h. In what time they will completely cross each other ?

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Correct option: B

8 s

Option B (8 s) is correct because the relative speed is the sum of the two speeds, and the total distance is the sum of the two lengths.

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