   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.
Our 2 1/2 year old takes great naps. Falls asleep right away after being awake for 6 hours. Lately the nap has been shorter and shorter, but bedtime has been a struggle for while. She gets up to go to the bathroom, get a drink, and then will talk to herself for an hour before finally falling asleep.ur 2 1/2 year old takes great naps. Falls asleep right away after being awake for 6 hours. Lately the nap has been shorter and shorter, but bedtime has been a struggle for while. She gets up to go to the bathroom, get a drink, and then will talk to herself for an hour before finally falling asleep.