A 50 kg woman stands on a massless board. The board rests on a frictionless froz

Question

A 50 kg woman stands on a massless board. The board rests on a frictionless frozen lake 45 m from a rock. Ten 5 kg blocks are stacked on the board next to the woman.

Which of the following will move the woman to the rock in exactly 3 s?

All at once, the woman slides all the blocks to the left at 15 m/s

All at once, the woman slides all the blocks to the left at 45 m/s

All at once, the woman slides all the blocks to the right at 15 m/s

All at once, the woman slides all the blocks to the right at 30 m/s

All at once, the woman slides all the blocks to the left at 15 m/s

All at once, the woman slides all the blocks to the left at 45 m/s

All at once, the woman slides all the blocks to the right at 15 m/s

All at once, the woman slides all the blocks to the right at 30 m/s

Explanation / Answer

All at once, the woman slides all the blocks to the right at 15 m/s

All at once, the woman slides all the blocks to the right at 15 m/s

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