The force a spring exerts is linearly proportional to the stretch of the spring. In fact, ... Here is the cool part, the graph of position vs. time.

Materials under stress The force-extension graph. ... Using the graph, calculate the work done to extend the spring from 0 m to 0.10 m. Show answer Hide answer. The area under the line is a triangle: ...

During this compression, the ball essentially acts like a spring. Yes, it gets compressed for a very short time—but then it returns to its original position. This is called elastic compression.