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Some Winter Olympics Mathematics

Downhill skiers race down a mountainside at an average of 2 miles, dropping 2400 feet at speeds approaching 90 miles per hour.

Question 1: What is the slope of the mountain side?

Question 2: How long does it take for a skier to ski the 2 miles (and drop the 2400 feet)? If the skier were to ski off a cliff and drop directly down (by gravity effects only) that same 2400 feet, how long would that take?

Source: Back of a Kellogg's Raisan Bran box, 1992