Two particles projected vertically upwar...

Two particles projected vertically upward from points `(0,0)` and `(1,0)m` with uniform velocity `10m//s` and `vm//s` respectively, as shown in the figure. It is found that they collide after time `t` in space. Time `t` is `1/(5(sqrt(x)-1))`. Calculate `x`

`2`

`3`

`5`

`8`

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