If the mass flow rate through the rocketâ??s engine is increased, then the thrust will be higher. Another way to increase the thrust amount is to increase the exit or initial velocity during takeoff.
Actually for some time even after the thrust is no longer greater than gravity. When the rocket's thrust is greater than gravity, it will be accelerating (its velocity upwards will increase). When the rocket's thrust is no longer greater than gravity, at that moment it will still have an upward velocity, so it will still travel upwards - it will only travel more and more slowly upwards as gravity starts to sap the rocket's upward velocity towards zero. Once its velocity reaches zero, if gravity is still winning over the rocket's thrust (if any), then it will start to fall back towards the ground.We are assuming a simplistic model (no air resistance, no super-unlucky collisions with meteors, etc.), but this is the basic idea.
Provide thrust ... which changes velocity.
more then 190 degrees.that is hot.
There are two forces acting on a water rocket. The thrust which the force that is given to the water rocket to make it move, and the other one is the gravity.
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.
The thrust of a rocket on liftoff can vary depending on the rocket's design and size. For example, the Falcon 9 rocket produces about 1.7 million pounds of thrust at liftoff.
The amount of thrust a rocket has depends on its design, type, and size. For example, the Saturn V rocket used in the Apollo missions had a maximum thrust of about 7.5 million pounds-force (33.4 meganewtons). Different rockets can have thrust ranging from a few thousand pounds-force to tens of millions of pounds-force.
The main factor in determining the amount of thrust a rocket requires to leave the Earth's atmosphere is the mass of the rocket. The heavier the rocket, the more thrust is needed to overcome Earth's gravity and propel it into space.
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
Payload weight.
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Balls in ya mouth
Payload weight
A rocket functions by burning an internal fuel source as a propellant. The thrust is then pushed through a nozzle to increase performance.
The first stage of the Apollo rocket had about 7.5 million pounds of thrust, generated by five F-1 engines. This massive amount of thrust was needed to launch the rocket and overcome Earth's gravity.
Rocket thrusters work by expelling a high-pressure gas out of a nozzle at the back of the rocket. This action produces a reaction force in the opposite direction as per Newton's third law of motion, propelling the rocket forward. The amount and speed of gas expelled determine the thrust generated by the thruster.
To increase rocket speed, you can add more propellant to increase thrust, reduce the rocket's mass by shedding unnecessary weight, or improve aerodynamics to minimize drag. Additionally, optimizing the rocket's trajectory and using efficient engine designs can also help increase speed.