Valley
(a) Click on START and play the animation several times. Describe in words how the speed of the ball changes on its path!
(b) Click on the check box "speed". Play the animation. What is displayed in the coordinate system?
(c) Solve using the representation in the coordinate system: At which position do you find the maximum speed? At which position do you find the minimum speed? How does the speed change while the ball is moving?
(d) Compare this situation to the previous applet "Hill". Summarize your considerations!