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The speed that ab object must travel at to escape a planet's gravity is called escape velocity. This value varies depending on the mass and diameter of the planet. Here are the escape volcities of the eight planets of our solar system.
Mercury: 9,400 mph
Venus: 23,000 mph
Earth: 25,000 mph
Mars: 11,000 mph
Jupiter: 133,000 mph
Saturn: 77,000 mph
Uranus: 48,000 mph
Neptune: 53,000 mph
Note that escape velocity only takes gravity into account and ignores other forces. An object launched from Earth's surface or from any other planet with a substantial atmosphere at escape velocity would be quickly destroyed and slowed down by air resistance.
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What force holds a planet in place?
Gravity keeps the sun and the planets in their places!
Why doesn't the sun fall from the sky. Shouldn't all the planets too fall along with the sun due to gravity?
If you tie a string to an object and hold the other end of the string, it will hang down from your hand towards the ground. If you swing the string around your head, the object will move upwards until it is rotating around your hand as it gets faster and faster. That speed is what allows the object to overcome the pull of gravity. Similarly, the planets are all rotating around the Sun at speeds which are fast enough to keep them from falling into it. The Sun is also spinning around the galaxy, and our galaxy is also in motion. The whole universe is in constant motion.
How fast do objects go in free fallouter space?
You can't fall in space, there is no gravity. An object will travel as fast as it is accelerated and continue at that speed forever as there is no air resistence to slow it down.
How do planets float in space without any gravity?
They do not "float". The planets are in motion, and that motion is governed by the gravitational pull of the Sun (and, to a lesser extent, that of the other planets). The position of the planets and their respective velocities is such that there is a balance which keeps the planets in their orbits, as opposed to either flying out into space or being pulled into the Sun.
How do planets move around the solar system?
Objects are attracted to other objects. now this is much more complex than that but I neither have the technical knowledge or time to truly explain all that. So because particles are attracted to each other the more mass an object has the more it pulls or attracts other objects, we call this force gravity. Objects such as planets that are orbiting other things (typically stars due to their massive size) are in a place where the force of gravity is not allowing them to escape but not entirely pulling them in. Stars (like the Sun) and planets form from fast-swirling clouds of dust. When their force of gravity is great enough, the swirls clump together into a spherical ball. That does not make them stop spinning or stop them from orbiting the Sun. We see that there is very little to make the spinning, orbiting planets slow their spins or orbits.
Is it true that an object launched into space must circle the earth as the moon does?
Not true. An object can fall back to earth, orbit (circle) the earth, or- if moving fast enough, leave the orbit of the earth and go elsewhere. We have sent probes to other planets- they are not circling the earth.
Why does gravity cause the planets to revolve around the sun instead of falling into it?
Actually, gravity is the force that would cause planets to fall into the sun. It is centripetal force that keeps the planets revolving and not falling. Centripetal force would cause the planet to fly off into space, while gravity would cause planets to be pulled into the sun. It is the balance of these two forces that keep planets in their orbits. ____________________________________ Newton's 2nd Law states that a body in motion, tends to remain in motion with a uniform velocity. That means that unless there is some sort of outside force, an object will continue to move in a straight line at a constant speed. Gravity is the "outside force" than bends the moving object away from its straight path into an orbit. Orbits are a balance between the attractive force of gravity and the momentum of a moving body. It's a delicate balance; if the object (be it moon, satellite or planet) is moving too fast, it will fly out into space, and if it is moving too slowly it will fall in toward the primary body.
When does the mass and or size of an object affect the time of its free fall?
if an object is lightr it will fall slower because gravity wont take it down as fast if it is heavier it will make the gravity pull it down faster
What is gaining of momentum?
When an object moves really fast it gains more mass because the centre of the object increases in density. This is why planets have such a large mass, because they travel so fast around the sun.
Why do our planets remain in orbit father of calculus?
The Sun's gravitational force controls all the orbits of planets and other objects that orbit the Sun (dwarf planets, asteroids, comets, meteors).An object without a force acting on it travels in a straight line, But the Sun's gravity causes each object to accelerate towards the Sun, as described by Newton's second law: force = mass x acceleration.The acceleration causes any fast-moving object to curve towards the Sun, as Newton discovered using calculus. This is a permanent process with the object in a stable orbit unless disturbed by a collision of some sort.
Why doesnt the suns gravity cause all the planets to crash into the sun?
The planets and other small bodies of the solar system are affected by gravity. But just like the satellites that orbit the Earth, they are rapidly orbiting around the Sun*. This forward speed (their inertia) means that gravity cannot pull them in a straight line into the Sun. Instead, they "fall past" the Sun in orbits that are reasonably stable, encountering little resistance from the near-vacuum of space. As well as having moons (mini-planets of their own), planets are affected by the gravity of other planets, and have established orbits that only change very, very slowly. *The velocity of the planets varies according to the distance at which they orbit, and is a remnant of the rapidly spinning disk of gas and dust from which the Sun and planets were formed. Everything on the Earth is moving at a velocity of 29.783 km/s (107,218 km/h), counterclockwise as seen from the arbitrary terrestrial "north".
Why does gravity hold planets in orbit?
they are moving at extremely fast velocities around the sun, so gravity keeps them in circular orbits without being powerful enough to be able to pull them in to our massive sun.
What force holds a planet in place?
Gravity keeps the sun and the planets in their places!
Can an object travel as fast as light?
No. If something could it would have to move about 700million mph. That's why it is hard to travel to other planets.
What effect does gravity have on the outer planets?
The effect of gravity does effect the planets. Gravity keeps the planets to the sun. Gravity works between any 2 objects. It's the attraction between planets and sun that keeps planets going around the sun otherwise they would keep going in a straight line.
How fast does something need to be to escape the gravity of a black hole?
In order to escape the gravity of a black hole, an object would have to travel faster than the speed of light - something that is impossible.
Why doesn't the sun fall from the sky. Shouldn't all the planets too fall along with the sun due to gravity?
If you tie a string to an object and hold the other end of the string, it will hang down from your hand towards the ground. If you swing the string around your head, the object will move upwards until it is rotating around your hand as it gets faster and faster. That speed is what allows the object to overcome the pull of gravity. Similarly, the planets are all rotating around the Sun at speeds which are fast enough to keep them from falling into it. The Sun is also spinning around the galaxy, and our galaxy is also in motion. The whole universe is in constant motion.
