Basically for the same reason that we don't sink into the Earth, despite gravity pulling us down. There is another force pushing us up - and there is another force pushing the hang glider up. In the case of the hang glider, the push is provided by the air.
because they have wings
It is pulling us toward the center of the earth. We are lucky we live on Earth and no some planet with a weak gravity where we can fly in the clouds.
If you are going against the wing/gravity you will not go as fast and it will be more of a struggle to fly.
yes, yes u can. we are on the ground because gravity is pulling us and if there isn't any gravity then nothing's pulling us anymore and we can fly. well not exactly fly but sort of above the ground. u cannot get any higher or any lower just at a constant height. well maybe i think u can move too left or right.
Gravity doesn't let humans fly because our bones are too heavy. The gravity of the disaster was made clear by the number of homeless victims.
Birds fly in air. They use the air to fight gravity. When air travels faster along the upper wing than the lower wing, the air force down is less than the air force up -- really helps most birds. Gravity affects birds.
Gravity is a force of attraction that pulls objects toward each other based on their mass. In this case, the Earth's gravity is pulling your pencil towards the ground, preventing it from floating in the air. The force of gravity is much stronger than any force you could exert to make the pencil fly upwards.
A real rocket flies by using combustion of fuel to generate thrust. The force created by the rocket's engine pushes against the ground, propelling the rocket upward. The rocket continues to fly as long as thrust generated by the engine is greater than the force of gravity pulling it down.
specific gravity of fly ash is 3.2
Then the baseball would fly in a straight line, leaving Earth eventually (if it started in the correct direction).
if theres no gravity then anyone could fly, so
It is half the reason, at least. Gravity is the force pulling the planets towards the sun, but they also have a velocity working perpendicular to it. With the velocity alone, the planets would fly off into space. With gravity alone, the planets would be pulled into the sun.