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December 21, 2014

Homework Help: Physics..PLZ HELP!!

Posted by Liz on Monday, October 8, 2012 at 8:36pm.

A rollercoaster reaches the top of the steepest hill with a speed of 6.0 km/h. It then descends the hill, which is at an average angle of ?=45 and is 45.0 m long. Estimate its speed when it reaches the bottom. Assume ľk=0.18.

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