0.2+ -0.2- -0.4- -0.6- -0.8- -1.0 2 3 Time (s) A cart of mass 2.0 kg on a horizontal surface is attached to a horizontal spring of negligible mass. A 1.0 kg block is secured on top of the of the 2.0 kg cart. The other end of the spring is attached to a wall, and there is negligible friction between the cart-block-spring system and the horizontal surface. The cart-block-spring system then experiences simple harmonic motion as described by the graph that shows the velocity of the cart- block system as a function of time. The maximum spring potential energy of the cart-block-spring system is most nearly 0.32 J 0.64 J 0.96 J D 1.92 J Velocity (m

0.2+ -0.2- -0.4- -0.6- -0.8- -1.0 2 3 Time (s) A cart of mass 2.0 kg on a horizontal surface is attached to a horizontal spring of negligible mass. A 1.0 kg block is secured on top of the of the 2.0 kg cart. The other end of the spring is attached to a wall, and there is negligible friction between the cart-block-spring system and the horizontal surface. The cart-block-spring system then experiences simple harmonic motion as described by the graph that shows the velocity of the cart- block system as a function of time. The maximum spring potential energy of the cart-block-spring system is most nearly 0.32 J 0.64 J 0.96 J D 1.92 J Velocity (m