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A particle is projected with initial vel...

A particle is projected with initial velocity `u = 10 m//s` from a point ( 10m, 0m, 0m ) m along z-axis. At the same time , another particle was also projected with velocity `v ( hat(i) - hat(j) + hat( k)) m//s` from ( 0m, 10m, 0m). It is given that they collide at some point in the space . Then find the value of v. `[ vec(g) = 10 m//s^(2) ( - hat(k))]`

A

10

B

5

C

`5 sqrt(2)`

D

`10 sqrt(2)`

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The correct Answer is:
A
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