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What happens when velocity is less than escape velocity?
If an object has escape velocity, then it will not fall back to the planet or Earth. Complete answer: This is because if the velocity with which the missile is launched is less than escape velocity, then the missile is bound by the gravitational field of Earth. This results in negative total energy.
What Does lowest escape velocity mean?
A planet (or satellite) cannot long retain an atmosphere if the planet’s escape velocity is low enough to be near the average velocity of the gas molecules making up the atmosphere.
Why do we need escape velocity?
Escape velocity is the speed required to escape gravity in the absence of any force being applied. So yes, of course it is possible to keep going upwards and further from the earth, but without reaching escape velocity you would eventually be pulled back to earth when the fuel runs out.
What is escape velocity obtain the expression for the escape velocity on earth why is that there is no atmosphere on the moon explain?
There is no atmosphere on the moon because the mass of the moon is so small that the gravitation is so small. Therefore, the escape velocity of moon is very less than the Earth. So that, it cannot hold the atmosphere.
What is escape velocity in physics?
Escape velocity: Measuring the gravitational strength of an object The escape velocity is the exact amount of energy you would need to escape the gravitational clutches of an object with mass. Since all objects have mass, they all have a measureable gravitational strength.
How does mass affect the escape velocity of a rocket?
Escape velocity refers to this case, not a powered rocket. Incidentally the mass of the ball does not effect the escape velocity if there is no atmospheric friction, which means that an elephant and a mouse would both have to be given the same escape velocity if launched from the surface of the moon!
Why don’t projectile vehicles have escape velocity?
An unpowered projectile needs escape velocity to travel arbitrarily high but a continually powered vehicle does not, of course. When the vehicle is in orbit above the atmosphere almost any force will do to push it further out – hence the ability of puny ion drives to push craft into higher orbits.
Is it possible to go further away from Earth without escape velocity?
To keep going up requires the continual application of force. So yes, of course it is possible to keep going upwards and further from the earth, but without reaching escape velocity you would eventually be pulled back to earth when the fuel runs out.