What is the volume of earth in cubic kilometres

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Q1. A unit of area often used in measuring land areas is the hectare defined as 114 m2. An open pit coal mine consumed 77 hectares of land down to the depth of 37 m each year. What is the volume of earth in cubic kilometres removed in this time?

Q2. At what distance from a backstop will a package need to be placed depending on its weight and knowing it has to hit the backdrop at a velocity of 66 in/sec on a 11 degree angle. What is distance for every 5 lbs of package weight?

Reference no: EM138829

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