   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.
Almost all children take only one nap per day by age 2. Have your child nap in the same place that she sleeps at night. A set naptime in a set place will ensure that your child gets the sleep she needs. The best time for naps is the early afternoon.Don't let your child nap past 4 p.m., or she'll have problems going to sleep at bedtime. At least three hours should elapse between the end of a nap and bedtime. Make naptimes consistent.lmost all children take only one nap per day by age 2. Have your child nap in the same place that she sleeps at night. A set naptime in a set place will ensure that your child gets the sleep she needs. The best time for naps is the early afternoon.