Question:

Train A is moving along two parallel rail tracks towards north with speed 72 km/h and train B is moving towards south with speed 108 km/h.Velocity of train B with respect to A and velocity of ground with respect to B are (in ms^–1) :

(1) –30 and 50

(2) –50 and –30

(3) –50 and 30 

(4) 50 and –30 

                                           JEE-2024         

Solution:                
Train A is moving along two parallel rail tracks towards north with speed 72 km/h and train B is moving towards south with speed 108 km/h.Velocity of train B with respect to A and velocity of ground with respect to B are (in ms^–1) : (1) –30 and 50 (2) –50 and –30 (3) –50 and 30 (4) 50 and –30 JEE-2024

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