A block is kept on the floor of an elevator at rest.

Question:

A block is kept on the floor of an elevator at rest. The elevator starts descending with an acceleration of $12 \mathrm{~m} / \mathrm{s}^{2}$. Find the displacement of the block during the first $0.2 \mathrm{~s}$ after the start. Take $\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^{2}$.

Solution:

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