Question

A train 200 m long crosses a bridge 300 m long.
It enters the bridge with a speed of 30 ms and
leaves it with a speed of 50 ms? What is the time
taken to cross the bridge ?
2.55
(2) 7.55 (3) 12.55
(4) 15.0s​

Answer 1

Answer:

(2)................

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