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How does a rocket taking off illustrate Newton's third law of motion?
Wiki User
∙ 12y ago
Newtons third law states that for every action there is an equal and opposite reaction. Now, in the case of a rocket, it is propelled by a very high velocity jet of fuel that is being shot out of the back, the reaction force to this is a thrust in the opposite direction. If you can imagine being on an ice surface then pushing against the boards you will go in the opposite direction, the rocket is basically shoving the fuel one way and getting pushed back in the opposite direction.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoYou don't need to go that far. Newton's 2nd Law does the job nicely.
F = M x A" The force on the body is equal to the product of (mass) times (acceleration) "The thrust (force) of the rocket motors is constant, so the product of the spacecraft's
(mass) times its (acceleration) is constant.
As it burns fuel from its tanks, its total mass shrinks. In order for the product of
(mass) x (acceleration) to remain constant, the acceleration increases as long
as the 'burn' continues.
Wiki User
∙ 11y agohow doe the diagram at the right illustrate Newton's third law of motion
Wiki User
∙ 12y agoIt relates to newtons third law so for every action there is an equal and opposite reaction. so when the arm of the catapult releases the ball goes forward
Wiki User
∙ 12y agoby flying in the air
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How does launching your rocket relate to this law of motion?
If a rocket is at rest (zero momentum) in outer space, where there is no gravity, then as long as there are no Outside forces on it its momentum must always be zero (consevation of momentum). This must be true even if an internal explosion brakes it into pieces. The pieces must fly off in such a way that their net vector momentum is zero. Turning on the engine is like an internal explosion. The hot gasses, which have mass, are ejected out the back at high velocity so the gas has momentum. In order to keep the total momentum zero the rocket must move forward so its momentum just equals the backward momentum of the gasses and the net momentum of both is zero. The same is almost true when taking off from earth. Because of the Earth's gravity(outside force) the upward momentum of the rocket won't quite equal the downward momentum of the gasses but its almost the same.
How does a rocket uses newtons laws of motion?
This law of motion is essentially a statement of a mathematical equation. The three parts of the equation are mass (m), acceleration (a), and force (f). Using letters to symbolize each part, the equation can be written as follows:f = maBy using simple algebra, we can also write the eauation two other ways: a = f/mm = f/aThe first version of the equation is the one most commonly referred to when talking about Newton's second law. It reads: force equals mass times acceleration. To explain this law, we will use an old style cannon as an example. When the cannon is fired, an explosion propels a cannon ball out the open end of the barrel. It flies a kilometer or two to its target. At the same time the cannon itself is pushed backward a meter or two. This is action and reaction at work (third law). The force acting on the cannon and the ball is the same. What happens to the cannon and the ball is determined by the second law. Look at the two equations below.f = m(cannon) * a(cannon)f = m(ball) * a(ball)The first equation refers to the cannon and the second to the cannon ball. In the first equation, the mass is the cannon itself and the acceleration is the movement of the cannon. In the second equation the mass is the cannon ball and the acceleration is its movement. Because the force (exploding gun powder) is the same for the two equations, the equations can be combined and rewritten below. m(cannon) * a(cannon) = m(ball) * a(ball)In order to keep the two sides of the equations equal, the accelerations vary with mass. In other words, the cannon has a large mass and a small acceleration. The cannon ball has a small mass and a large acceleration. Let's apply this principle to a rocket. Replace the mass of the cannon ball with the mass of the gases being ejected out of the rocket engine. Replace the mass of the cannon with the mass of the rocket moving in the other direction. Force is the pressure created by the controlled explosion taking place inside the rocket's engines. That pressure accelerates the gas one way and the rocket the other.Some interesting things happen with rockets that don't happen with the cannon and ball in this example. With the cannon and cannon ball, the thrust lasts for just a moment. The thrust for the rocket continues as long as its engines are firing. Furthermore, the mass of the rocket changes during flight. Its mass is the sum of all its parts. Rocket parts includes engines, propellant tanks, payload, control system, and propellants. By far, the largest part of the rocket's mass is its propellants. But that amount constantly changes as the engines fire. That means that the rocket's mass gets smaller during flight. In order for the left side of our equation to remain in balance with the right side, acceleration of the rocket has to increase as its mass decreases. That is why a rocket starts off moving slowly and goes faster and faster as it climbs into space.Newton's second law of motion is especiaily useful when designing efficient rockets. To enable a rocket to climb into low Earth orbit, it is necessary to achieve a speed, in excess of 28,000 km per hour. A speed of over 40,250 km per hour, called escape velocity, enables a rocket to leave Earth and travel out into deep space. Attaining space flight speeds requires the rocket engine to achieve the greatest action force possible in the shortest time. In other words, the engine must burn a large mass of fuel and push the resulting gas out of the engine as rapidly as possible.
What does Newtons first law explain?
Newton's first law of motion 'Everybody retains its state of rest or state of motion, until an external force Is applied on it. A Person sitting in a moving car fall forward , when the car stops suddenly. Athlete run some distance , before taking a long jump.
What regulates heat?
A human body regulates its temperature by sweating and shivering. When the body is too hot, glands produce sweat which contains heat and evaporates, taking the heat with it. When a human is too cold, the body starts to shiver, a quick, repeated motion which generated heat from repeated muscle motion.
Why are rockets launched as close to the equator as possible?
Rockets are launched as close to the equator as possible to launch satellites most economically by taking full advantage of the Earth's rotational velocity, which is about 1000 miles per hour at the equator and slower at all higher latitudes. This is 1000 miles per hour less speed that the rocket needs to provide and a significant savings in rocket fuel. However, other rockets are not launched from the equator as there is no similar advantage (e.g. rockets launching polar orbiting satellites or military warheads can be launched from anyplace and going to the equator to launch them would be an unnecessary expense with many disadvantages).
What are examples of accelerated motion?
A rocket taking off, quite slowly lifting then accelarating quickly . Free falling
How does a rocket worke?
The critical part of a liquid-fueld rocket that provides it with its ability to "fly" is the combustion chamber, sometimes, but not always, including a shaped nozzle, positioned at the rear (bottom) end of the vehicle. The combustion chamber is open at one end. In its simplest form the chamber is bowl-shaped (a half-sphere) with its open end pointing down, away from the vehicle. The Saturn V, used for the Apollo missions, used this kind of combustion chamber. Combustible liquids are pumped into the chamber. This may consist of a single, essentially self-igniting, liquid, or it may consist of two or more liquids which, when combined, can be made to combust. The Saturvn V used kerosene (the fuel) and liquid oxygen (the oxidizer). When the engine is "lit" so that the fuel is burning (more like "exploding") inside the combustion chamber it creates tremendous pressures inside the chamber. Some of that pressure is against the upper, inside portion of the combustion chamber, and it is that pressure (force) against the upper inner surface of chamber that propells the rocket. Since the chamber is open at one end the forces in that direction cause the combustion exhaust gases to exit the chamber. This causes an "exhaust plume" out of the back of the rocket engine. Some have described this as being a situation where the exhaust plume "pushes" the rocket, or that it is the exhaust plume that causes the rocket to move, or that the rocket "rides on top of a trail of fire". But that is not the case and is not a correct way of describing what happens. The exhaust plume does NOT move the rocket. The exhaust plume does NOT cause the rocket to move. Rather, the combustion pressures inside the combustion chamber causes both the rocket motion AND the exhaust motion. Some have also noted that, since Sir Isaac Newton's Third Law Of Motion states that " For every action, there is an equal and opposite reaction ", it is therefore the rapidly exiting gases from the rear of the rocket that cause the rocket to move forward. Again, this is not a correct description of the situation. Yes, the Third Law of Motion applies to the rocket. Yes, there is both a forward motion of the rocket and a backward motion of the exhaust gases. But it is not correct to say that the one (exhaust gasses) CAUSES the other (the rocket motion). Yes, there is a mathematical, physical relationship between the motion of the exhaust and the motion of the rocket (taking in to account their respective masses), and given a measurement of one you can calculate the other (e.g. knowing the velocity and mass of the exhaust gasses and the mass of the rocket you can calculate the velocity of the rocket). But it is NOT valid to say that the rocket motion is CAUSED BY the exhaust gas' motion. The correct view on this is that both the motion of the exaust gas and the motion of the rocket are caused by the combustion pressure inside the combustion chamber.
How does a rocket?
The critical part of a liquid-fueld rocket that provides it with its ability to "fly" is the combustion chamber, sometimes, but not always, including a shaped nozzle, positioned at the rear (bottom) end of the vehicle. The combustion chamber is open at one end. In its simplest form the chamber is bowl-shaped (a half-sphere) with its open end pointing down, away from the vehicle. The Saturn V, used for the Apollo missions, used this kind of combustion chamber. Combustible liquids are pumped into the chamber. This may consist of a single, essentially self-igniting, liquid, or it may consist of two or more liquids which, when combined, can be made to combust. The Saturvn V used kerosene (the fuel) and liquid oxygen (the oxidizer). When the engine is "lit" so that the fuel is burning (more like "exploding") inside the combustion chamber it creates tremendous pressures inside the chamber. Some of that pressure is against the upper, inside portion of the combustion chamber, and it is that pressure (force) against the upper inner surface of chamber that propells the rocket. Since the chamber is open at one end the forces in that direction cause the combustion exhaust gases to exit the chamber. This causes an "exhaust plume" out of the back of the rocket engine. Some have described this as being a situation where the exhaust plume "pushes" the rocket, or that it is the exhaust plume that causes the rocket to move, or that the rocket "rides on top of a trail of fire". But that is not the case and is not a correct way of describing what happens. The exhaust plume does NOT move the rocket. The exhaust plume does NOT cause the rocket to move. Rather, the combustion pressures inside the combustion chamber causes both the rocket motion AND the exhaust motion. Some have also noted that, since Sir Isaac newton's Third Law Of Motion states that " For every action, there is an equal and opposite reaction ", it is therefore the rapidly exiting gases from the rear of the rocket that cause the rocket to move forward. Again, this is not a correct description of the situation. Yes, the Third Law of Motion applies to the rocket. Yes, there is both a forward motion of the rocket and a backward motion of the exhaust gases. But it is not correct to say that the one (exhaust gasses) CAUSES the other (the rocket motion). Yes, there is a mathematical, physical relationship between the motion of the exhaust and the motion of the rocket (taking in to account their respective masses), and given a measurement of one you can calculate the other (e.g. knowing the velocity and mass of the exhaust gasses and the mass of the rocket you can calculate the velocity of the rocket). But it is NOT valid to say that the rocket motion is CAUSED BY the exhaust gas' motion. The correct view on this is that both the motion of the exaust gas and the motion of the rocket are caused by the combustion pressure inside the combustion chamber.
Why does rocket taking off from the earth needs much more fuel than the same rocket taking off from the moon?
dunno and it need answer gravity is very strong on earth as the rocket gets higher gravity gets weaker they have to overpower gravity to lift of
What is the difference between a rocket and a satellites?
A satellite orbits the earth and observes it. A rocket is designed to go to different planets, either taking people with it, or taking a space prob to take pictures of that planet.
What is the difference between a rocket and a satellite?
A satellite orbits the earth and observes it. A rocket is designed to go to different planets, either taking people with it, or taking a space prob to take pictures of that planet.
Why might an inventor name a locomotive ''the rocket''?
An inventor might name a locomotive The Rocket to indicate it goes fast. Or perhaps they are saying that if you ride it, it is a big deal, like taking a rocket to space.
How did the rocket burst in which kalpana chawla traveled?
when they were taking off from earth to go to space one tile of rocket get off and when they were coming it takes more force and because of the tile the rocket burst
What is an examples of projectile motion?
airplane taking off
How is position important to motion?
If the position is changing, that can serve as a powerful clue to support the conjecture that there is motion taking place.
How we solve equations of motion by graph?
One can solve equations of motion by graph by taking readings of the point of interception.
Is a plane taking off an example of projectile motion?
Yes
