12-86. When a rocket reaches an altitude of 40 m it begins
Chapter 12, Problem 12-86(choose chapter or problem)
12-86. When a rocket reaches an altitude of 40 m it begins to travel along the parabolic path (y - 40)2 = 160.V, where the coordinates are measured in meters. If the component of velocity in the vertical direction is constant at vr = 180 m/s, determine the magnitudes of the rockets velocity and acceleration when it reaches an altitude of 80 m.
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