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 risk of brushing immediately after meals is that you'll end up scrubbing away acid-softened layers of your enamel with your toothbrush, which is never good. Additionally, when you drink or eat things that are already highly acidic your teeth are at an even greater risk for toothbrush abrasion. Research has shown that avoid amplifying the damage caused by acids you should wait 60 minutes to engage in brushing after significant acidic exposures.