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Physics

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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!

  • Physics -

    V^2 = Vo^2 + 2g*d.
    V^2 = 25 + 19.6*(25-2.5) = 466
    V = 21.6 m/s.

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