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Grade: 11
        
the train is moving with a uniform velocity on a straight road .a boy moving at 4km/h due east observes that the train is moving due north. another boy moving at 1km/h due south claims that the train is moving towards north-east. what is speed of the train in ground frame full solution
 
2 months ago

Answers : (1)

Arun
22364 Points
							
Using the first point it can be said that the velocity of the train and the boy along east are the same. So the velocity of the train is 4 km/h due east. Using the second part it can be determined that the velocity along north and east are same(no angle given by boy implies the train is moving at an angle of 45). SO the velocity is 4km/h due north and the same due east.
 
Regards
Arun (askIITians forum expert)
2 months ago
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