Density and measurement

Classical Mechanics Level 2

During a heavy rain, a section of a mountainside measuring $2.5 \text{ km}$ horizontally, $0.80 \text{ km}$ up along the slope, and $2.0 \text{ m}$ deep slips into a valley in a mud slide. Assume that the mud ends up uniformly distributed over a surface area of the valley measuring $0.40 \text{ km} \times 0.40 \text{ km}$ and that the mud has a density of $1,900 \text{ kg/m}^{3}.$ What is the mass of the mud sitting above a $4.0 \text{ m}^{2}$ area of the valley floor?

1.9 \times 10^5 \text{ kg}

4.0 \times 10^5 \text{ kg}

1.9 \times 10^6 \text{ kg}

1.6 \times 10^4 \text{ kg}

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Density and measurement

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