Explain why the velocity and acceleration vectors behave as they do for the preset motions (linear acceleration I, II, circular motion, & harmonic motion).
Dentist Tip: Brushing three times a day is ideal. If you can brush once after every mealâbreakfast, lunch, and dinnerâyou minimize the growth of bacteria in your mouth. But wait an hour after each meal: brushing too soon can cause damage to the enamel of your teeth.
You should brush your teeth gently with a soft-bristle toothbrush at least twice a day. It is best if you can brush after every meal. Your dentist may tell you to rinse with salt water or hydrogen peroxide and water. Do not use mouthwashes that contain alcohol, which can make the problem worse.