   A heavier plane has more momentum (when thrown at the same speed),  but it's also got more downward force acting on it. If it has the  same wing area, though, it has the same lift, so it drops more  quickly than a light plane (objects fall at the same speed only in  the absence of air resistance).
By 2 months, baby's bedtime should be between 6:00-8:00pm and should occur about 1 hour after the last nap ends. 3 months: babies this age should be on a solid 4 nap schedule with the last nap of the day ending by 5:00pm.
11 month old starting daycare. Hi Dr. Laura, I'm looking for some advice on how to possibly transition my almost 11 month old into daycare on a part time basis. Currently, I work evenings and my husband works days, so one of us is always with her. This has worked *ok*, except, due to my schedule I am only getting 4 hours of sleep a night.