A 20.0 g ball is pushed against the spring of a toy gun. The spring constant is 200. N/m. Use conservation of energy If the spring was compressed 5.0 cm, how much elastic potential energy does the toy gun have? If the trigger is pulled and the spring comes to its original, uncompressed position, what will be the speed given to the ball? If the toy gun had been pointed vertically upward when the trigger was pulled, how high will the ball rise above the uncompresssed position of the spring?