It takes 10 s and 15 s, respectively, for two trains travelling at different constant speeds to completely pass a telegraph post. The length of the first train is 120 m and that of the second train is
(A) 2.0 (B) 10.0 (C) 12.0 (D) 22.0
- Deepshikha
- 26 जून
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ShubhamSP
- 02 जुलाई
here we assume that bith of the train is having same length so that distance for crosing make constant..therfore, for 1st train speed is 120/12 =10 m/sec.. for second train 120/15=8m/s so the difference on that speed is 10-8=2m/sec
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