We will make use of the PHET simulation of force of friction found at: https://phet.colorado.edu/sims/html/forces-and-motion-basics/latest/forces-and-motion-basics_en.html Part !: Kinetic Friction 1. CLICK FORCES, SUM OF FORCES, VALUES, AND MASSES 2. For each mass in the chart, push the object until it is moving fast then let go. The friction force by the red arrow will be your kinetic friction . 3. Solve for the forces of gravity (weight) for each mass. 4. See image below for an example Bum of Forcon Ban of Forces Friction Forces and Motion: Basics Applied Force Motion Friction Acceleration Net Force