posted by Anonymous .
A ball of mass 0.1 kg is attached to a rubber band, which we can model as a spring of stiffness 8 N/m. With one end of the rubber band fixed, you throw the ball vertically upward with an initial speed of 14 m/s. At the moment the ball leaves your hand, the rubber band is already stretched 0.1 m from its unstretched position. What is the maximum height the ball will rise (relative to where it was thrown)?