Question

4.) A 300 m long train is moving with a uniform velocity
of 90 km/h. The time taken by the train to cross
another train of length 700 m moving with same
speed in opposite direction is
[NCERT Pg. 51
(1) 56 s
(2) 68 s
(3) 20 s
(4) 92 s​

Answer 1

Answer

Distance to be covered = 1700 + 300 = 2000m

Speed = 90 × 5/18 = 25 m/s

Time = Distance/Speed

= 2000/25

= 80 sec

Answer 2

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Distance to be covered = 1700 + 300 = 2000m

Speed = 90 × 5/18 = 25 m/s

Time = Distance/Speed

= 2000/25

= 80 sec

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