Question 16. A spring-loaded toy gun is used to launch a 10 g plastic ball. The spring, which has a spring constant of k = 10 N/m is compressed by 10 cm as the ball is pushed into the barrel. When the trigger is pulled, the spring is released and shoots the ball back out horizontally. What is the ball's speed as it leaves the barrel? Assume that friction is negligible. O 2.2 m/s O 3.2 m/s O 4.5 m/s O 10 m/s O 14 m/s