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Three particles starts from origin at the same time with a velocity `2 ms^-1` along positive x-axis, the second with a velocity `6 ms^-1` along negative y-axis, Find the velocity of the third particle along `x = y` line so that the three particles may always lie in a straight line.

A

`-3sqrt3`

B

`3sqrt2`

C

`-3sqrt2`

D

`2sqrt2`

Text Solution

Verified by Experts

The correct Answer is:
B

co-ordinate of `P = (3, 3)`
`:.` Speed of 3rd particle `= 3d sqrt2 m//s`
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