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Gravity, which pulls an object inward, and inertia, which resists gravity. They combine to form a more-or-less circular orbit.
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What two factors cause planets to move in elliptical orbits?
The elliptical orbit of planets is a result of the gravitation of the sun and the tangential velocity of the planet.
What two motions keep an object in orbit?
An orbit is made possible by an equilibrium, or balance, of forces. Typically, this involves two forces: one of gravitational attraction between the objects and another caused by centripetal acceleration. At a given radius of orbit, a velocity can be found such that these two forces are equal, keeping the object in orbit.
What two forces work together to keep the planets in orbit around the sun?
The two forces that work together to keep the planets in orbit around the sun are gravity and inertia.
The size of a planet's orbit is determined by?
The mass of the planet, the mass of the sun and the distance between the two.
What keeps the planets in orbit around the sun?
Gravity, combined with the velocities of the planets, keeps the planets in orbit around the Sun.Gravity between any body, such as a planet, and the Sun is one factor. Also the planet has a velocity. These two things combine to keep the planet in orbit around the Sun.Gravitation. The suns gravitational pull. The huge mass of the sun means it has a huge gravitational pull, keeping all of the planets in place. There is also the planets velocity that would take the planet away from the sun if there was no gravity, so these two forces act against each other.
What two forces keep a planet in orbit?
Gravity and Enertia (Not that sure on the spelling of the last one)
What two factors cause planets to move in elliptical orbits?
The elliptical orbit of planets is a result of the gravitation of the sun and the tangential velocity of the planet.
How are all the planets kept in orbit by gravity?
The sun's gravity exerts a constant force on each planet in the direction straight toward the sun, but the law of inertia tries to keep the planet moving in a straight line. The resultant force from the vector addition of those two forces keeps the planet in its orbit.
What two motions keep an object in orbit?
An orbit is made possible by an equilibrium, or balance, of forces. Typically, this involves two forces: one of gravitational attraction between the objects and another caused by centripetal acceleration. At a given radius of orbit, a velocity can be found such that these two forces are equal, keeping the object in orbit.
Is the perimeter of a planet's orbit determined by how big or small it is or how hot the sun makes the planets?
NO, the orbit of any planet or moon is determined by the size of the two objects involved (example: the Earth and the Sun) and the distance between those two objects: the closer the objects are to each other and the bigger one of the objects is, the stronger the gravitational pull ( large objects have stronger forces on other smaller objects). The orbit of a planet has nothing to do with the Sun's heat.
What two forces work together to keep the planets in orbit around the sun?
The two forces that work together to keep the planets in orbit around the sun are gravity and inertia.
The size of a planet's orbit is determined by?
The mass of the planet, the mass of the sun and the distance between the two.
Which two planets has the most elliptical orbit?
The planet with the most elliptical orbit is Mercury. Second is Mars.
Inertia makes a plant tend to travel in a straight line but what keeps it in orbit?
Gravity keeps a planet in orbit. Inertia tries to make the planet move in a straight line. The balance between the two makes the planet orbit a sun.
How many years does planet mars orbit around the sun?
two
Are there moons orbiting the planet Mars?
Yes. Two moons orbit the planet Mars: Phobos and Deimos.
What keeps the planets in orbit around the sun?
Gravity, combined with the velocities of the planets, keeps the planets in orbit around the Sun.Gravity between any body, such as a planet, and the Sun is one factor. Also the planet has a velocity. These two things combine to keep the planet in orbit around the Sun.Gravitation. The suns gravitational pull. The huge mass of the sun means it has a huge gravitational pull, keeping all of the planets in place. There is also the planets velocity that would take the planet away from the sun if there was no gravity, so these two forces act against each other.
