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What may happen to a rocket which rises from the earth never attains escape velocity?
A rocket that doesn't reach "escape velocity" will be overcome by gravity and will be pulled back down to Earth. Also, rockets which go into orbit have not reached escape velocity. Escape velocity is what is needed to completely leave earth's gravity well.
To reach outer space rockets must escape what force?
gravity
What is meant by the 'escape velocity' of a rocket leaving the earth?
There is a speed, about seven miles a second, that if reached, will allow an object to overcome the earth's gravitational pull and continue into space. Rockets don't actually need to do this speed, since their objective is usually to establish an orbit around the earth.
How does an astronaut travel up into space?
Astronauts in their spacecraft (such as the Space Shuttle) are lifted into space by huge rockets which accelerate the craft to "escape velocity" (about 25,000 mph). This puts the craft into orbit around the Earth, its forward velocity balancing the continuous pull of gravity. When they are ready to return to Earth, they use rockets to slow down, and gravity pulls them back out of orbit.
What are some of the jobs rockets have done in the past?
Rockets have sent unmanned spacecraft to mars and Jupiter. Satellites put in orbit by rockets beam back information about earth's atmosphere and weather.
The escape velocity from Earth is greater for larger rockets than for small ones?
False
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.
What may happen to a rocket which rises from the earth never attains escape velocity?
A rocket that doesn't reach "escape velocity" will be overcome by gravity and will be pulled back down to Earth. Also, rockets which go into orbit have not reached escape velocity. Escape velocity is what is needed to completely leave earth's gravity well.
Why are rockets important?
Rockets are needed to lift payloads into space, whether it's to launch a satellite into an orbit around earth or to send a probe out into our solar system and beyond. A lot of speed is required to be able to escape the gravity of the earth. This is provided by the rocket and the huge amount of fuel.
To reach outer space rockets must escape what force?
gravity
Why do rockets use thrust?
Rockets use thrust to overcome the force of Earth's gravity.
What is the escape speed from the surface of the earth?
The escape speed from the surface of the earth, or the "escape velocity" from the earth is about 11.2km/s.
Why do rockets have potential energy?
Rockets in flight have kinetic energy. Rockets with remaining fuel have chemical energy. Rockets still able to fall back to Earth have potential energy.
When was Escape from Earth created?
Escape from Earth was created in 2005.
What is meant by the 'escape velocity' of a rocket leaving the earth?
There is a speed, about seven miles a second, that if reached, will allow an object to overcome the earth's gravitational pull and continue into space. Rockets don't actually need to do this speed, since their objective is usually to establish an orbit around the earth.
How does an astronaut travel up into space?
Astronauts in their spacecraft (such as the Space Shuttle) are lifted into space by huge rockets which accelerate the craft to "escape velocity" (about 25,000 mph). This puts the craft into orbit around the Earth, its forward velocity balancing the continuous pull of gravity. When they are ready to return to Earth, they use rockets to slow down, and gravity pulls them back out of orbit.
How many pages does Escape from Earth have?
Escape from Earth has 432 pages.
