Question

Answer for this question is , at zero distance. It is because if there is no resistance,then their speed will never change and thus they will never meet.

This was a USA Talent question.​

Answer 1

Explanation:

Speed of the train =72km/hr=72×5/18 m/sec=

20m/sec

Let the length of the goods train be x m. Then

250+x/20

=26⇒250+x=520⇒x=270m

Answer 2

72 km per hour is the corrdct snswer.......