Question

A bird is flying towards south with a velocity
40km/h and a train is moving with a velocity
40 km/h towards east. What is the velocity of the
bird wirt an obserber in the train ?
(1) 40 v2 km/h. N-E
(2) 40 v2 km/h. SE
(3) 40 v2 km/h. S-W
(4) 40 v2 km/h. N-W​

Answer 1

Apply the triangle rulebor parallelogram rule. The the vector direction the the respective direction. The rest is just calculations. It's easy