A roller coaster reaches the top of the steepest hill with
A roller coaster reaches the top of the steepest hill with a speed of 6.8 kilometer per hour. It then descends the hill, which is at an average angle of 40o and 45 meter long. Determine what will its speed be when it reaches the bottom?
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a roller coaster reaches the top of the steepest hill with a speed of 68 kilometer per hour it then descends the hill
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