Here is a JAVA game to focus on developing an idea of what effect forces can have on the motion of objects 

You are looking down on a red hockey puck on (what else?) frictionless ice. Unless you cause it, there is no horizontal force on it.

The left mouse button connects a rubber-band force between the cursor and the puck, which begins to move accordingly. You cannot see the rubber band on the screen but it goes between the cursor and the puck. The F is proportional to the stretch of the rubber band and is shown as a little arrow.

Your mission is to “play” the game and through little experiments come up with a statement in your own words of what a force can do to the motion of a body. Do not use any technical terms like “acceleration” or “inertia” .  You should also change the mass of the puck and see what effect a change in mass has. Relate this to what we saw about mass in lab earlier

Think of these on your own and then come up with your team’s particular version.

Everybody should actually take the controls and play at least some.

If the ball is not in evidence at the start just press the "reset" button. You can cause the ball to leave tracks or not by pressing the right buttons.