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.
By the way, brushing in the morning BEFORE eating will do your teeth more good than brushing after. That is because there will be in your mouth first thing, quite a large population of bacteria. Brushing will remove these effectively. So there will be many less of them to multiply whilst you are eating.