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Four particles A, B, C and D are moving ...

Four particles A, B, C and D are moving with constant speed v each. At the instant shown relative velocity of A with respect to B, C and D are in directions :-
ltimg src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/ALN_PHY_R05_E03_014_Q01.png" width="80%"gt

A

B

C

D

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A
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