Gravity and velocity (or inertia), and they aren't things. They're forces.
Gravity and inertia. The Sun's gravity holds all the planets in orbit with its immense gravity, and the planets have no tendency to change their orbits due to the law of inertia which implies that the planets will stay in their elliptical patterns until a force acts on them to change that status.
The Sun's gravity causes a planet to move in its orbit. The Sun's gravity provides a centripetal force. The effects of the Sun's gravity, combined with the planet's inertia (tendency to move in a straight line), results in a planet's elliptical orbit.
1) The gravitational attraction between the planets and the Sun. 2) The "inertia" of the planets. That's their tendency to move in a straight line unless a force (gravity in this case) acts on them.
Gravity and Inertia.
Earth is held in elliptical orbit around the sun by gravity. It's motion can be thought of as due to a combination of gravity and inertia.
Isaac Newton.
Gravity and velocity (inertia) keeps planets in orbit around suns.
gravity and inertia
Gravity and velocity (or inertia), and they aren't things. They're forces.
A combination of inertia and gravity.
Gravity and inertia. The Sun's gravity holds all the planets in orbit with its immense gravity, and the planets have no tendency to change their orbits due to the law of inertia which implies that the planets will stay in their elliptical patterns until a force acts on them to change that status.
Gravity affects inertia. The lower the gravity, the more inertia.
Physics. Specifically, it's a combination of inertia and gravity.
The Sun's gravity causes a planet to move in its orbit. The Sun's gravity provides a centripetal force. The effects of the Sun's gravity, combined with the planet's inertia (tendency to move in a straight line), results in a planet's elliptical orbit.
The result is friction.
Inertia does not affect gravity, these are two entirely separate things, even though they both are produced by the same thing, which is mass. Mass creates both inertia and gravity, but inertia and gravity do not affect each other.