Professor Dave Explains
Practice Problem: Box Sliding Down a Ramp
Lisa, are you serious? Alright, just one more favor. This one is a little trickier than the previous, because there is some trigonometry involved, beyond the kinematics and friction from the previous problems. What will become of your...
Professor Dave Explains
Practice Problem: One-Dimensional Two-Body Problem
Lisa is moving again already! I dunno, I think there were bedbugs. This time you have a different plan, but you will still need kinematics and Newton's laws to find out how much time and effort stand between you and more snacks. Give it...
Massachusetts Institute of Technology
Mit: Blossoms: Static Kinetic Friction Forces: Similarities & Differences
Students move past the misconception that friction inhibits our ability to do things by watching videos and participating in corresponding activities. Activities which range in difficulty include calculating the coefficient of friction.
Khan Academy
Khan Academy: Tension: Tension in a Accelerating System and Pie in the Face
The second part to a complicated problem. We figure out the tension in the wire connecting two masses. Then we figure our how much we need to accelerate a pie for it to safely reach a man's face. [9:28]