migninghts & Notes

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$7$ Mark for Review

A$\%$

Two blocks, of masses $m$ and $2m,$ are initially at rest on a horizontal surface. Friction between the blocks and the surface is negligible. The block of mass $m$ is pulled a distance $d$ to the right by a constant horizontal force of magnitude $F.$ The block of mass $2m$ is also pulled a distance $d$ to the left by a constant horizontal force of the same magnitude $F.$ What is the ratio of the work done by the force on the block of mass $m$ to the work done by the force on the block of mass $2m?$

$1$:$1$

$($D$)1$:$-2$