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.
My friends and I have had this conversation many times. We all brush our teeth twice a day (morning and night), but there usually comes a time when you miss one or the other. So, which one is most beneficial to the health of your teeth? I argue that it's better to brush at night, so you get all the junk off your teeth before you go to sleep. You might have bad breath in the morning, but that's better than giving sugar and plaque eight extra hours to work away on your enamel while you're sleeping.