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.
Follow your dentist's home care instructions. 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.