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A rocket becomes progressively easier to accelerate as it travels upward from the ground mainly because?
The rocket's acceleration is created by the net force acting on it. There are three forces acting on the rocket: the thrust provided by the engines, gravity or weight, and air resistance. The acceleration is inversely proportional to the rocket's mass. This is Newton's Second Law: (acceleration) = (net force) / (mass) We need to think about the direction of the forces. The thrust acts upward (call this positive), and both gravity and air resistance acts downward (call these negative). So we get (acceleration) = (thrust - weight - air resistance) / mass A typical rocket engine will provide constant thrust as long as the fuel lasts. But as the engine consumes fuel, expelling the exhaust products out the back of the rocket, the rocket's mass decreases. This tends to increase the rocket's acceleration since acceleration is inversely proportional to the mass. In addition to the decreasing mass, the rocket's weight decreases as it moves farther from the center of the Earth--- this effect is described by Newton's Law of Gravity. The rocket's decreasing weight tends to increase its upward acceleration. The action of air resistance is more complicated, and ordinarily we ignore air resistance in simple models just to avoid the complication air resistance gives to the problem. In the standard air resistance model, air resistance scales with the square of the rocket's speed and the air density. The rocket is moving faster and faster, but the air density is also decreasing as it rises through the atmosphere. I think we can safely say the air resistance force decreases as the rocket gains altitude, but a detailed answer illustrating precisely how this force changes would require a numerical simulation. Hope this helps!
How does a rocket work with refrence to Newton's laws of motion?
It works quite well. Here's how. 1. The rocket won't move until the engines are fired. That's the law of inertia. It's at rest, and it remains at rest until it's acted upon by an outside force. The opposite is true, too. If a body is in motion, it wants to remain in motion unless it's acted on by an outside force. 2. When the rocket motors are fired, the rocket takes off. It accelerates, and that's the law of acceleration. Force = mass x acceleration. The more mass it has for a given thrust, the less acceleration it has. The more thrust it has for a given mass, the more it accelerates. 3. The rocket motors inject hydrogen and oxygen (typical NASA "big rocket" fuel) into the throat of the motor where it burns quickly and hotly. Superheated combusted gas is rushing out the exhaust nozzle with tremendous force, and an opposite force is generated. That opposite force causes the rocket to be accelerated up (since the nozzles are pointed down). For each reaction there is an equal and opposite reaction, Newton's third law. Need a link? You got one to our friends at Wikipedia, where knowledge is free.
How many newtons of force does a rocket need to take off?
This depends on the weight of the rocket, weight being the mass of the rocket multiplied by earth's gravitational pull. To take off, the rocket needs to exert force larger than the weight, and for a sufficient amount of time to break out of orbit. For instance, if the rocket had a mass of 1kg, it'd exert (1 * 9.8), or 9.8 Newtons of force towards to ground via it's weight (9.8 being the acceleration towards the ground due to gravity). This means that to start to accelerate away from the ground, the rocket would need to exert force higher than 9.8 Newtons. If your hypothetical rocket has a mass of x kg, then it will need to exert a force greater than 9.8x newtons, ignoring air resistance and decaying of the gravitational field.
Does one need science to become an accountant?
No. Just some basic mathematics modules! You dont need rocket science to become an accountant
How do you make a bottle rocket stay in the air as long as possible?
To have a water rocket stay in the air for a longer time make your nozzle smaller. It will allow the presurized water to escape more slowly. But do not make your nozzle to small always there will be to much drag on the rocket and not enough thrust to propel it upwards. To stabilize your rocket use fins that are down on the bottles neck, this will make your rocket more stabil in flight. Just like the feathers on the back of an arrow. I hope i helped answer your question.
Why does a rocket need a large thrust on take off from the earth?
A rocket needs a large thrust on takeoff from Earth to overcome the force of gravity pulling it down. The large thrust is necessary to generate enough speed to reach escape velocity and break free from Earth's gravitational pull. Once the rocket is in space, it needs less thrust to maintain its course.
What does a rocket need to take off?
A rocket needs a powerful thrust to overcome Earth's gravity and lift off. This thrust is typically provided by rocket engines that burn fuel to create a force that propels the rocket upward. Additionally, the rocket needs a stable structure to withstand the forces of liftoff and the harsh conditions of space.
How much thrust does a rocket need to get to outer space?
A rocket needs enough thrust to overcome Earth's gravitational pull and achieve the required velocity to reach outer space, typically around 25,000 mph (40,000 km/h). The exact thrust needed depends on various factors such as the rocket's size, weight, and the altitude it needs to reach.
What kind of force is needed to launch rocket ships?
Rocket ships are launched by a combination of forces, including the thrust generated by the rocket engines and the force needed to overcome gravity. The thrust from the rocket engines propels the rocket forward, while the force needed to overcome gravity allows the rocket to lift off the ground and enter into space.
How does a rocket turn in if there is no air resistance in space . What does it push against. What resists the thrust?
There is no need for air resistance, nor does the thrust need to push against anything. The energy of firing a rocket pushes the exhaust gasses out and, in accordance with Newton's Third Law, the gasses push back on the rocket with the same amount of force, but in the opposite direction. By firing gas jets or rockets that are not aligned with the center of mass, that force exerts torque, which allows a rocket to turn.
How do you drive a rocket?
To drive a rocket, you need to control its trajectory and speed by adjusting the thrust produced by the rocket's engines. This is typically done through a combination of computer guidance systems and manual controls. Pilots or operators monitor the rocket's performance and make adjustments to ensure it follows its desired flight path.
How does a rocket change its speed in space with no air?
Some people (who have not studied physics) believe that rockets work because the rocket exhaust pushes against the air, and therefore in the vacuum of space where there is no air, rockets won't work - but that is not the case. Rocket exhaust doesn't need to have air to push against. The expanding gases in the rocket's exhaust nozzle push against the rocket. The gas has its own mass and its own inertia, and the change in momentum of the exhaust gas causes an opposite change in momentum of the rocket. This can be difficult to grasp because we think of gas as being virtually weightless, but a large rocket can emit literally tons of exhaust. The fact that it is in the form of a gas doesn't change the result; mass is mass, whether solid, liquid, or gas.This is WRONG, rocket DOES work in space.From NASA"A rocket is a type of engine that pushes itself forward or upward by producing thrust. Unlike a jet engine, which draws in outside air, a rocket engine uses only the substances carried within it. As a result, a rocket can operate in outer space, where there is almost no air."How it accelerate"Rocket engines generate thrust by putting a gas under pressure. The pressure forces the gas out the end of the rocket. The gas escaping the rocket is called exhaust. As it escapes, the exhaust produces thrust according to the laws of motion developed by the English scientist Isaac Newton. Newton's third law of motion states that for every action, there is an equal and opposite reaction. Thus, as the rocket pushes the exhaust backward, the exhaust pushes the rocket forward.The amount of thrust produced by a rocket depends on the momentum of the exhaust -- that is, its total amount of motion. The exhaust's momentum equals its mass (amount of matter) multiplied by the speed at which it exits the rocket. The more momentum the exhaust has, the more thrust the rocket produces. Engineers can therefore increase a rocket's thrust by increasing the mass of exhaust it produces. Alternately, they can increase the thrust by increasing the speed at which the exhaust leaves the rocket."http://www.nasa.gov/worldbook/index.html
How much thrust does a rocket need to take off?
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.
How does newton's first law realte to rocket movement?
Newton's first law, which dictates that objects will maintain their current states of stillness or motion unless acted upon, affect rockets in two ways.First, it establishes the need to exert a massive force to get a rocket off the ground: not only to simply get moving but also the overcome the force of gravity being exerted on the rocket while on the ground.Second, it explains why rockets do not need so much thrust once they do get into space. According to the first law, as long as the rocket doesn't have to alter its speed or direction, it doesn't need to exert any more force. This is why space-bound vessels are calculated on such careful trajectories--to allow for their natural tendencies of motion to carry them to their destinations.
Why does space shuttle need thrust?
To move? Search "thrust" in google
How do rockets work in space?
Well it all has to do with propultion like when a shuttle pushes with rocket thrust into space. I wouldn't say that what a rocket does is worthy of the term flight. A rocket simply provides a force that is greater than the force of gravity and thereby gains in altitude provided it is pointed in the right direction to begin with. True flight has to involve the use of air-foils or wings which turn velocity into lift. If you put wings on a rocket then yes rockets are capable of flight in that the rocket provides the thrust necessary to utilize the wings to provide lift.
How do you improve accelaration of a rocket in space?
F = M A whence A = F/M .Acceleration is directly proportional to the force applied to the rocket, and inverselyproportional to the rocket's mass. If you need to increase the acceleration, you havetwo choices . . . either reduce the rocket's mass, or increase the force applied to it.That means you must either toss something overboard, or else burn fuel faster.There's no other way.
