buoyancy
Gravity.
inertia. because inertia keeps things going in a straight line, and that kind of throws it forward, but the direction of "foward" keeps changing as the car or roller coaster turns.
It is changing force
not necessarily sometimes it creates force sometimes not
No one keeps statistics on such things.
Gravity is the force that keeps things from floating out into space, including the atmosphere. Gravity is the attraction between objects with mass, causing them to be pulled toward each other. This force is what keeps everything in our solar system in orbit around the sun and everything on Earth from floating away.
The force that keeps objects floating is called buoyancy. It is the upward force exerted by a fluid that opposes the weight of an immersed object.
Gravity.
the density
The force of gravity between the moon and the planet is what keeps the moon in orbit around the planet. This gravitational force prevents the moon from floating away into space and keeps it in a stable orbit.
The force of the Sun's gravity keeps them in their orbits.
Buoancy is the upward force that keeps things floating. I guess it doesn't need surface tension.. http://en.wikipedia.org/wiki/Buoyancy
Gravity is what keeps us from floating away into space. It's a force that pulls things down toward the ground, like making objects fall when we let go of them. It's what keeps everything on Earth in place!
Keeps most things from floating into space? :-)
Gravity keeps trees from floating about.
The force of gravity between an object and Earth keeps objects from floating into space. Gravity acts as a force of attraction that pulls objects towards Earth's center, preventing them from drifting off into space.
Gravity is the force that keeps objects from floating off in space. The gravitational pull from celestial bodies like planets and stars keeps objects in orbit around them. Without gravity, objects would move in a straight line away from these bodies.