The applet on Page 2 simulates vertical motion in the earth's gravitational field without air resistance (free fall). Details on how the applet functions are available under Applet Help on the applet's Help menu.

When working with the applet, open "Activities Page 2" under Related Items for suggestions on what to investigate with the applet.

You may find it useful to have a copy of the Work-Kinetic Energy Theorem in front of you while working with the applet. You may want to copy the statement below. A statement of the theorem is also available under Related Items.

Work-kinetic energy theorem for a single particle:

The net work W done on a particle during a given time interval by the net force acting on the particle is equal to the change in the particle's kinetic energy during that time interval. In symbols,

W_net = DKE (1)

where

KE = (m/2)v² (2)

is the particle's kinetic energy, m the mass of the particle and v the speed of the particle.