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.
escape velocity if its leaving earths gravity
No. It cannot escape the Earths gravity.
The gravity of a black hole is stronger than Earth's gravity. Black holes have such a strong gravitational pull that not even light can escape from them.
No. To even reduce it by 75% you must travel out to 4000 miles.
Today's rockets use chemical fuel for this. That is, they burn something.
Astronauts travel in space and escape earth's atmosphere by wearing gravity resistant suits and traveling to outer space in a space shuttle that is insulated against the elements.
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.
Well they are used because without them the space shuttle would not be able to have enough force to escape the earths gravity when it was being launched.
To overcome gravity, you must reach "Escape Velocity" to overcome gravity and escape a planet's orbit.
they have to pass some forces in the earths atmosphere They have to overcome the force of gravity, lifting the rocket and all of the fuel to an escape orbit.
When on Earth, you can escape if you move away from the Earth at the "escape" speed. Gravity will slow you down and you will reach zero speed at an infinite distance.
To escape the Earths gravity the shuttle goes 17,500 miles an hour. You can use that value to figure out how far it goes in 500 seconds.