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i would suppose that it's because the incline is greatest then..but i suppose rocket means "something unmanned lol". the idea i have in my head says something along the lines of, the object has a path of of travel and when its moving it has a projected path of travel. so if the propellant was to be cut off when the rocket is traveling 100mph, it's not just going to stop..it has energy yet to be released. also i believe that things weigh more the faster they are going, according to Einsteins theory of relativity. but when things aren't moving they don't have a projected path of travel that is anywhere else other than where it is, then. so probably because motion must be established, and once it is, the forward motion of the object aids the propellant, if you will..or is less resistance for the propellant.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoThe rocket's thrust must be greater than the force of gravity applied to the rocket. Heavier rockets will need more thrust. NASA formulas for calculating thrust are available from the link below.
Wiki User
∙ 12y agoAny thrust greater than its weight will lift it off the ground.
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How much money does it take to make a rocket ship?
100,000.000
Explain how a balloon is like a rocket when it is blown up and released to fly around the room?
A balloon rocket is a balloon filled with air. Besides being simple toys, balloon rockets are a widely used teaching device to demonstrate physical principles and the functioning of a rocket.To launch a simple rocket, a person releases the opening of a balloon, which is then propelled somewhat randomly by the escape of the air which creates thrust. The flight altitude amounts to some meters. The balloon rocket can be used easilyto demonstrate simple physics, namely Newton's third law.A common variant of the balloon rocket consists in adding other components such as a string, a drinking straw and adhesive tape to the balloon itself. The string is threaded through the straw and is attached at both ends to objects of some kind, such as a doorknob on one end and a chair on the other. The straw is then taped to the side of the air-filled balloon, with the open end of the balloon touching one of the objects. When the balloon is released, the thrust from the opening propels it along the length of the string. Alternatively, a balloon rocket car can be built.The balloon can also be filled with gases other than air, with similar results
What is a removable solid rocket engine on a rocket?
If you're talking about a solid rocket booster, or SRB, then it's the solid-fuel powered rocket motors attached outside the main vehicle, used to provide extra lift at take-off, and jettisoned after take-off when their fuel has expired. These are used on the sides of the Space Shuttle (they're the big, pointy things on the sides). That's the only thing I know of that fits your description, and I'm sorry if that's not what you mean.
How 3D CAD models can be used in the design process?
I have this assignment as well, it don't take a rocket scientist to figure this out
What are the four forces on an aircraft and how do they act on an aircraft?
For an airplane to fly, it must always engage in a tug of war between the opposing forces of lift versus weight and thrust versus drag. For a moment, think of an airplane moving from right to left and the flow of air moving from left to right. The weight or force due to gravity pulls down on the plane opposing the lift created by air flowing over the wing. Thrust is generated by the propellor and opposes drag caused by air resistance to the airplane. During take off, thrust must be greater than drag and lift must be greater than weight so that the airplane can become airborne. For landing thrust must be less than drag, and lift must be less than weight. Hope this helps
How much thrust does it take to launch a rocket?
10,0000,00000009
Why does a rocket need a large thrust on take off from the earth?
The rocket has to overcome the pull of gravity.
What generates thrust that helps a rocket take off?
burning fuel (rocket propellant)
What would happen if the thrust of the rocket at take-off was not enough to put the rocket in orbit around the earth?
it would not take off
How much thrust does it take to take off from earth into space?
Any amount of thrust that's greater than the weight of the rocket vehicle will lift it off of the ground and accelerate it upward. If you keep it up long enough, the vehicle will be in space.
What would happen if the thrust of the rocket at take off was not enough to put the rocket in orbit around the earth?
It would crash like NASA's Titan rocket did.
What is thrust capacity?
Thrust Capacity is how much thrust it can take :D
How much force a rocket needs to take off?
That depends on its weight. Minimally it must exert a thrust greater than or equal to its own weight, or it will just sit there.
What does the rocket takeoff from?
Your question is very broad. One of the things a rocket takes off from is called a launch pad. Launch pads are the place where rockets take off. But the things that cause it to take off are completely different. A rocket takes off or 'launches' from a concept called thrust. Thrust is when say I have a ten pound ball that I want to throw directly up in the air. I need to create 10 pounds of energy to launch it and then enough energy to actually get it to where I want to go. Those are the basic things that make a rocket launch.
Why does a space craft requires a rocket engine instead of a jet engine?
because jet engines reqire air to take in in order to work, rocket engines spew matter to privide thrust
How do rockets navigate?
The chemicals in the rocket take in the oxygen from the air behind the rocket and then explode in all directions. As there is less oxygen behind the rocket the thrust goes in that direction more and forces the rocket forwards.
What helps make a rocket take off?
Basically "thrust", which is the difference between the air pressure in at least 2 different places who are connected to each other.
