Everything that happens is an interaction, from the wind blowing a sail to a cannon ball being thrust out of a cannon. A simulation shows the interactions involving a sail, air, ball, pirate, cannon, deck, ocean, and the Earth and...

This program gives students a visual representation of the forces on a block that is on an inclined plane. The students can watch how force gravity, force normal, and force friction change as the angle of the plane changes. Students can...