Three blocks are initially placed as shown in the figure. Block A has mass \( m \) and initial v...

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Three blocks are initially placed as shown in the figure. Block A has mass \( m \) and initial velocity \( v \) to the right. Block \( B \) with mass \( m \) and block \( C \) with mass \( 4 \mathrm{~m} \) are both initially at rest. Neglect friction. All collisions are elastic. The final velocity of block A is
img src=https://penpencil-static-content.s3.ap-south-1.amazonaws.com/5eb393ee95fab7468a79d189/is9t7bzbl1qa0x8ay7ypey9ms.png /
(A) \( 0.6 \mathrm{v} \) to the left
(B) \( 1.4 \mathrm{v} \) to the left
(C) \( v \) to the left
(D) \( 0.4 \mathrm{v} \) to the right
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