   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.
At this age, if you are not lucky enough to have a baby who sleeps through the night, many 5 month olds are still waking 1-3 times to eat at night. Anything more and likely you have a sleep association problem. Your 5 month old should be taking 3-4 naps per day for a total of 3-4 hours per day plus 11-12 hours at night.If youâre having trouble with naps, you might be interested in helping your baby nap.our 5 month old should be taking 3-4 naps per day for a total of 3-4 hours per day plus 11-12 hours at night. If youâre having trouble with naps, you might be interested in helping your baby nap.