a bird sharply pulls down its wings as it did when it pushed off the ground
Birds Are Made To Fly.Their Wings Are Bigger In Size Than Their Body.Birds Are Of Light Weight And Due To Continuation Of Flapping Of The Wings The Earth's Gravitational Pull To Doesn't Effect Them Too Much,Whereas Human Body Is Heavier Than The Birds,So The Gravitational Pull Pull's Us Down Hence The Humans Can't Fly In The Air
No, Gravity actually pulls upwards but the sheer mass of things makes them heavier and stay on the ground instead of flying away. This is how Birds are able to fly, because they have a mass inconsistency they partially float and then propel themselves with their wings.
Just like pull it down and and pull it up over your ears like wings
Gravitation pulls everything down (people, rocks, birds, planes..) It takes a force to counter the pull of gravity; in birds' case, it's lift from the birds wing. As air flows past the wing the fact that the length of chord of the upper wing is slightly longer then the length of the chord of the bottom of the wing - this induces a difference in flow speed and creates a slight upward force called lift. The faster a bird goes, the higher the lift (to a limit.) The longer the wing, the more lift is generated - this is why bird with very long wingspans can travel long distances and go very high compared to birds with shorter wings.*If a bird's wing cannot generate enough lift, the bird will fall to the ground: they must overcome the pull of gravity. * Note - high speeds are counter to large wings, hawks have shorter and swept vs broad wings on Eagles. The Eagles can go higher and longer, but the Hawks can go faster for short periods of time.
butterfly has wings. a gull (seagull)
Because upthrust is greater than gravity, therefore, it stays in the air. Also, the power of the engines/wings hold them up.
Tell them you have 2 bills of $100 there, and the first one to pull your pants down can have em!
Ask first!
angel
Angel
If this question is about the trunk lid pull down---there is a switch on the side of the pull-down motor--first step. Else complete pull-down assembly from junk yard.
Like all other animals, in the same way, a constant pull towards the earth (AKA down) So, birds don't get special treatment in the ways of physics.