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.
The following are some steps that you can take to help prevent the development of dental plaque in your mouth: Brush your teeth at least twice a day. It is best to brush for at least two minutes each time. The best times to brush are just before eating or at least an hour after eating.