1.

60.A bird is flying with a speed of 40 km/hr. in thenorth direction. A train is moving with a speed of40 km/hr. in the west direction. Apassenger sittingin the train will see the bird moving with velocity :-(1) 40 km/hr in NE direction6(2) 40 /2 km/hr in NE direction(3) 40 km/hr in NW direction(4) 40 V2 km/hr in NW direction

Answer»

velocity of bird = 40j ( +j along north)

velocity of train is = -40i... ( +i along east)

so, velocity of bird with respect to train = Vb-Vt = 40j-(-40i) = 40j+40i = 40√2 in (+i+j) direction.. means north east direction..

option 2.



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