Two blocks each of mass $m$ are connected to a spring of spring constant $k.$ If both are given velocity $v$ in opposite directions, then the maximum elongation of the spring is
Two blocks each of mass $m$ are connected to a spring of spring constant $k.$ If both are given velocity $v$ in opposite directions, then the maximum elongation of the spring is
- A
$\sqrt {\frac{{m{v^2}}}{k}} $
- B
$\sqrt {\frac{2{m{v^2}}}{k}} $
- C
$\sqrt {\frac{{m{v^2}}}{2k}} $
- D
$2\sqrt {\frac{{m{v^2}}}{k}} $
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