A neutron having a mass of 1.67 xx 10^(-...

A neutron having a mass of `1.67 xx 10^(-27) kg` and moving at `10^(8) m//s`collides with a deuteron at rest and sticks to it. If the mass of the deuteron is `3.33 xx 10^(-27) kg` then the speed of the combination is

`2.56xx10^(3)m//s`

`2.98xx10^(5)m//s`

`3.33xx10^(7)m//s`

`5.01xx10^(9)m//s`

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