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 Dr. Scott Frey. It's common knowledge for most people to brush after meals; however, to keep your teeth at their healthiest, it is far better to brush your teeth before eating rather than after in many cases. Anytime you eat or drink anything that is sugary, the bacteria in your mouth feed on these sugars to make acids.