At a given instant of time two part...

At a given instant of time two particle are having the position vectors ` 4veci - 4 hatj + 7 hatk ` meters and ` 2 veci + 2 hatj + 5hatk` meter respectively . IF the velocity of the first particity of the particle is `0.4 ms^(-1) ` find the velocity of the second particle in meter per second , IF they collide after 10 seconds .

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The correct Answer is:

`0.6(veci-vecj+1/3veck)`

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