Answer: A toy gun uses a spring to project a 5.3-g soft
Chapter 5, Problem 5.3.70(choose chapter or problem)
A toy gun uses a spring to project a 5.3-g soft rubber sphere horizontally. The spring constant is 8.0 N/m, the barrel of the gun is 15 cm long, and a constant frictional force of 0.032 N exists between barrel and projectile. With what speed does the projectile leave the barrel if the spring was compressed 5.0 cm for this launch?
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