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Positions of two vechicles A and B with ...

Positions of two vechicles A and B with reference to origin O and their velocities are as shown.

A

they will collide

B

distance of closest approach is 100 m.

C

their relative speed is `40/sqrt(3) m//s`

D

their relative velocity is `20/sqrt(3) m//s`

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The correct Answer is:
B, C
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