In a one-dimensional collision between two particles, their relative velocity is `vecv_(1)` before the collision and `vecv_(2)` after the collisionA. `vecv_(1)=vecv_(2)` if the collision is elasticB. `vecv_(1)=-vecv_(2)` if the collision is elasticC. `|vecv_(2)|=|vecv_(1)|` in all casesD. `vecv_(1)=-kvecv_(2)` in all cases, where `kge1`

In a one-dimensional collision between two particles, their relative v

1.	In a one-dimensional collision between two particles, their relative velocity is `vecv_(1)` before the collision and `vecv_(2)` after the collisionA. `vecv_(1)=vecv_(2)` if the collision is elasticB. `vecv_(1)=-vecv_(2)` if the collision is elasticC. `\|vecv_(2)\|=\|vecv_(1)\|` in all casesD. `vecv_(1)=-kvecv_(2)` in all cases, where `kge1`
Answer» Correct Answer - B::D `vecv_(2)-vecv_(1)=e(vecu_(1)-vecu_(2))` for `1-D` collision.

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