Posted by **Anonymous** on Monday, September 26, 2011 at 7:00pm.

A particle, starting from point A in the drawing at a height h0 = 3.1 m, is projected down the curved runway. Upon leaving the runway at point B, the particle is traveling straight upward and reaches a height hf = 4.5 m above the floor before falling back down. Ignoring friction and air resistance, find the speed of the particle at point A.

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