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.
Answer: Do it as soon as you wake up. In general, you should avoid brushing directly after a meal. Acids are in high gear, working to break down your food for approximately 20 minutes after a meal. Brushing during that time will force acid into the pores of your tooth enamel and help to break it down.