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Because there is no friction (to speak of) in space, once a spacecraft begins to move (by a rocket engine 'burn') it will continue to move at constant speed for ever, unless acted on by a force. Spacecraft can only be slowed down by further rocket burns in the opposite direction to which the craft is travelling. As an example, the Apollo missions used two systems to slow down. First, the craft possessed small rockets situated around the vehicle that, when switched on, could make the craft roll or even turn round 180 degrees gradually. If a craft had to slow down considerably, such as it did when it had to slow to achieve orbital speed round the moon, then the craft was turned round by the small rockets, so that the main rocket engine would be facing in the direction to which the craft was travelling. Then the second method would come into play. The rocket would burn for a pre-caculated time sufficient enough to make the vehicle slow down as the burn would be in the opposite direction to which the vehicle was moving. By adjusting the burn time, and trimming any motion using the small rockets, the craft could be positioned at the right orientation and speed.
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoThey slow down by firing their engines retrograde(opposite to direction of movement).
If the orbit isn't particularly high above atmosphere, it is also possible to slow down due to friction.
Wiki User
∙ 13y agoRockets accelerate because of the material expelled from the thrusters. The force applied is equal to u*v, whereas u is the amount of material expelled per second (kg/s), and v is the velocity of this material (m/s). This force accelerates the rocket.
Wiki User
∙ 13y agoJust as they have thrusters in the the direction they want to go, spaceships also have thrusters for slowing down (in opposite direction of course) and thrusters to spin the craft in various directions to control its next vectored thrust.
Wiki User
∙ 13y agoBy forcing out gas in the opposite direction at high speed. Every action having an equal and opposite reaction.
Wiki User
∙ 15y agoreverce thrusters
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What are the stages of rocket going into space?
count down and then blast off hehehehehehehehe
Is a space shuttle more like a rocket or a plane?
its really both, it goes up like a rocket and comes down like a plane
What drops off and are parachuted into the ocean after the space shuttle takes off?
The solid rocket boosters are jettisoned as their fuel runs out. Their fall is slowed by parachutes and they are later recovered and returned to the Kennedy Space Center for refurbishing and reuse on later missions.
How is a real rocket able to blast into space?
the pressure from the the rocket's fuel thingy makes the rocket go up. pretty soon, the rocket is in space.
What was the first rocket to launch to space?
the first rocket was
How space rocket in space can be slowed down?
a rocket can be slowed down by firing trusters in the opposite direction however the slower the rocket moves forward the faster it will fall
Why doesn't a rocket in space need to use an engine to keep moving in space?
Because there is no friction in space to slow the rocket down. Once the rocket is at its cruising speed, the engine can be switched off. Of course, that means that you have to use a different engine (pointing forwards) to slow down and stop the rocket since friction won't do it for you.
How do astronauts get puled back down to the floor in space?
they take there rocket back
What are the stages of rocket going into space?
count down and then blast off hehehehehehehehe
Is a space shuttle more like a rocket or a plane?
its really both, it goes up like a rocket and comes down like a plane
What drops off and are parachuted into the ocean after the space shuttle takes off?
The solid rocket boosters are jettisoned as their fuel runs out. Their fall is slowed by parachutes and they are later recovered and returned to the Kennedy Space Center for refurbishing and reuse on later missions.
How do rocket explore space?
a rocket powers the space station into orbit
What was the name of the rocket which propelled them into the space?
In 1969, the first rocket went to the moon. The name of the rocket that propelled them into space was the Saturn V rocket.
How do Space Aids in space Exploration?
a rocket powers the space station into orbit
Who is rocket?
a rocket is how people get into and get stuff into space
How is a real rocket able to blast into space?
the pressure from the the rocket's fuel thingy makes the rocket go up. pretty soon, the rocket is in space.
What did international trade slowed down as a result of?
International trade slowed down as a result of the Hawley-Smoot tariff.
