The “F” word: Centrifugal force - the sensation that you are being flung outward. Car acceleration forward - flung back Car accel centripetally - flung outside Sunglasses going out the window Fenders on bikes

Centrifugal vs. Centripetal Centripetal - toward the center. Demo - float in jar - linear and centripetal accel Centrifugal - away from the center Things sliding to outside of car on corner (accel forward, thrown back, accel middle, thrown outside) Merry-go-round Mud off bike tire Water from salad in salad spinner Sunglasses out the window and the F word. (Perceived force - not real)