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CBSE Class 11-science Answered

NUMERICAL PROBLEM BASED ON MOTION WITH UNIFORM ACCELERATION
Asked by | 01 Dec, 2008, 05:40: PM
answered-by-expert Expert Answer

the velocity of train 1 = 72km/h = 20m/s

the velocity of train 2 = 90km/h = 25m/s

The distance between them = 1000m.If the applied brakes is -1m/s2 .

Then for the first train

V2 –u2 = 2as

v=0:         S = 20m

Similarly for the second train S = 25m.

After travelling the respective distances the distance still between them is 1000 -(20+25) >0 implies the trains would not collide.

Answered by | 02 Dec, 2008, 08:27: PM

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