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The speed or velocity an object needs to escape from the gravitational field of a planet is called "Escape Velocity" In other words, the amount of kinetic energy needed to overcome the gravitational field. The expression is given in
1/2mv^2 - GMm/r (m= mass of object trying to overcome gravitational field)
M(mass of the planet)
V(Escape Velocity)
G(universal constant which = 6.67E-11)
r(distance from surface of planet or w/e)
when you derive that formula, you will find that the velocity needed is: V= *square root of: 2GM/r
What else can I help you with?
What is the speed of the earth to escape the sun's gravity?
The escape velocity from the Sun at the Earth's distance is about 42.1 km/s. This means that for an object to escape the Sun's gravity at this distance, it would need to travel at that speed. The Earth's orbital speed around the Sun is about 30 km/s, so it is not moving fast enough to escape the Sun's gravity.
Would a spacecraft need as much fuel to escape from the moons gravity as it would to escape from the earths?
Escape velocity for the moon is a little over 5000 miles per hour. For the earth it is about 25,000 miles per hour. So the moon requires a fifth of the energy required to escape the earth.
Why does a space shuttle need to travel so fast when entering earths atmosphere?
Although it reaches incredible speeds, a Space Shuttle is not going fast when it enters the atmosphere. The gravitational pull of Earth, or just gravity, are pulling down on the space shuttle with immense force.
To reach outer space rockets must escape what force?
To reach outer space, rockets must escape the force of gravity. Gravity is the force that pulls objects towards the center of a mass, such as the Earth. Rockets need to generate enough thrust to overcome Earth's gravity and reach escape velocity to enter outer space.
How much force does it take to break away from earths gravity?
To break away from Earth's gravity and reach space, an object needs to reach an escape velocity of about 11.2 kilometers per second (about 25,000 mph). The force required to achieve this velocity is enormous and depends on the mass of the object. For example, a spacecraft with humans onboard would need powerful rockets to generate enough force to break free from Earth's gravity.
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.
What is the speed of the earth to escape the sun's gravity?
The escape velocity from the Sun at the Earth's distance is about 42.1 km/s. This means that for an object to escape the Sun's gravity at this distance, it would need to travel at that speed. The Earth's orbital speed around the Sun is about 30 km/s, so it is not moving fast enough to escape the Sun's gravity.
Would a spacecraft need as much fuel to escape from the moons gravity as it would to escape from the earths?
Escape velocity for the moon is a little over 5000 miles per hour. For the earth it is about 25,000 miles per hour. So the moon requires a fifth of the energy required to escape the earth.
What is the speed maintained by a rocket if it is launced in outer space so it will escape the earth's gravity?
According to most sources, the minimum speed needed to escape the Earth's gravity is 11.2km/s, so a rocket would need to travel at least this fast to get into outer space.
Why do rabbits need to run fast?
They need to run fast so they can out-run and escape predators.
Why do seahorses have streamlined body?
to escape from its predator so it need to swim very fast to escape from them or to swim fast to catch preys :-)
Why does a space shuttle need to travel so fast when entering earths atmosphere?
Although it reaches incredible speeds, a Space Shuttle is not going fast when it enters the atmosphere. The gravitational pull of Earth, or just gravity, are pulling down on the space shuttle with immense force.
What forces need to be overcome to get to the moon?
If you want to get out of the earth, say for example you want to get to the moon, then you will need to escape gravity.
To reach outer space rockets must escape what force?
To reach outer space, rockets must escape the force of gravity. Gravity is the force that pulls objects towards the center of a mass, such as the Earth. Rockets need to generate enough thrust to overcome Earth's gravity and reach escape velocity to enter outer space.
Why does a rocket need such a big engine?
So that it can escape Earth's Gravity. The rockets work by burning so much fuel that they can overpower Earth's gravity.
Is the pull of earths gravity 3 times stronger then earth?
need to re-word that question... makes no sense
How many miles an object take to escape from earths gravitational pull?
To fully escape Earth's gravitational pull, an object would need to reach a speed of about 25,000 mph or approximately 40,000 km/h. This is known as the escape velocity and is the minimum speed required for an object to break free from Earth's gravity. The distance an object would need to travel to achieve this speed would depend on various factors such as altitude, initial velocity, and atmospheric conditions.
