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April 24, 2014

Homework Help: Physics

Posted by Ciara on Monday, December 3, 2012 at 12:09am.

A new roller coaster is a conservative system. If the coaster leaves the starting point with a speed of 5 m/s and a height of 25 m, what is its velocity when it reaches a height of 2.5 m?

A. 9.81 m/s^2 B. 21.6 m/s C. 15.4 m/s D. 12.6 m/s

Pls show work thank u!

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