Open Source Ejs Kinematics of 1 object vertically java applet
Illustrate increasing/decreasing displacement at increasing/decreasing rates up down motion.

An abandon applet that i was trying to make for the up and down motion but i settled for a left and right applet

http://home.phy.ntnu.edu.tw/~lookang/EJS_4.1_090115/weexvrelation06.html