Q. 285.0( 1 Vote )

A train moving at

Answer :

To find: Average Velocity = ?


Now, Total time = (30 + 40) minutes


= 70 minutes


= Hour = Hour


(1 hour = 60 min)


Let,


Eastwards is positive x direction


Northwards is positive y direction


So,


Eastwards : ,


Northwards : ,


Now, Displacement = Velocity × Time


Eastward:



Northward:



So, Total Displacement =


And,


Now, also total time = hr


So,



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