Randall D. Knight — Interactions and Potential Energy: Problem 68

In Problems 67 through 69 you are given the equation used to solve a problem. For each of these, you are to: a. Write a realistic problem for which this is the correct equation. b. Draw the before-and-after pictorial representation. c. Finish the solution of the problem. \[ \frac{1}{2}(0.20 \text{ kg})(2.0 \text{ m/s})^2 + \frac{1}{2}k(0 \text{ m})^2 = \frac{1}{2}(0.20 \text{ kg})(0 \text{ m/s})^2 + \frac{1}{2}k(-0.15 \text{ m})^2 \]