![]() Time graph, which shows the apparent weight the rider feels. The authors have given this sim extra kick by including a G-force vs. time graph to customize the elevator ride. First, set the height and time, then watch the simulated motion. This EJS (Easy Java Simulation) model combines the acceleration of gravity with the acceleration of an elevator moving up or down. This model is especially helpful for visualizing the relationship between the one-dimensional motion of this example and its graph, as it displays the ball continuously bouncing at constant velocity in a straight line from floor to ceiling. Students can test their answers by setting the initial velocity on the simulation, then watch the ball's path. ![]() The student's task is to calculate an initial velocity so that the ball barely touches the 80-foot ceiling. This simulation by Wolfgang Christian shows a ball launched by a spring-gun in a building with a very high ceiling.
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