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A train moving on a straight track with constant acceleration crosses a pole such that the front end of the train has a velocity of 20 m/s while crossing it and the rear end has a velocity of 30 m/s while the rear end crosses the pole. What will be the velocity of train when the mid-point of train is crossing tge pole?

A train moving on a straight track with constant acceleration crosses a pole such that the front end of the train has a velocity of 20 m/s while crossing it and the rear end has a velocity of 30 m/s while the rear end crosses the pole. What will be the velocity of train when the mid-point of train is crossing tge pole?

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1 Answers

Sandeep Bhamoo
443 Points
5 years ago
Let length of train =L, then by v²-u²=2as 900-400= 500= 2aL. Now for mid part s=L/2, v²- 400 = aL = 250 , v²=650 v=√650. Pleae do approve my abswer if correct

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