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A motor car A is travelling with a veloc...

A motor car A is travelling with a velocity of 20 m/s in the north-west direction and another motor car B is travelling with a velocity of 15 m/s in the north-east direction. The magnitude of relative velocity of B with respect to A is

A

25 m/s

B

15m/s

C

20m/s

D

35m/s

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