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How so you explain conservation of momentum when a rocket ship takes off?
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Conservation of linear momentum explain?
The conclusion for a lab about the conservation of linear momentum is exactly that. Linear momentum is conserved. Momentum p = m*v is a product of mass and velocity. The larger the mass or faster the velocity, the higher the momentum. It takes prolonged force to stop it. Also, if a closed system exists that is not affected by dissipative forces, the total momentum of the system will remain. In a collision between two objects, momentum is conserved.
How did you explain conservation of momentum when a rocket ship takes off?
Momentum P of a body with mass m and velocity v is given by:P = m∙vNewton's first law of motion establishes conservation of momentum on abody as long as there is no net force applied on it.Let's assume our Rocket Ship is about to be launched from the surface ofa planet with no gravity force, so we can leave out the influence of thisforce from the discussion.At time t ≤ 0 from launch, the Rocket Ship's velocity v is zero, and soits momentum P is also zero.When the Rocket Ship starts his motion upwards, the initial system (theRocket Ship), is now conformed by two subsystems: The Rocket Ship goingup and the exhaust gases being sent down.To give a simple view of what happens, lets assume that the massof the exhaust gases is expelled at a constant velocity vg through the wholeprocess till the Rocket Ship's engine stops. Then the final condition ofmomentum would be:P = mR∙vR + mg∙vg = 0where mR and mg are the final Rocket Ship's mass and the total mass ofexhaust gases expelled respectively, and vR the Rocket Ship's final velocity.You have to realize that the vectors of velocity VR and Vg will have oppositesigns.If we now would want to include the planets gravity force, this willbe affecting the momentum of the Rocket Ship by producing an accelerationin the opposite direction of its velocity. If we now think of the originalsituation of Rocket Ship and planet at rest, when the Rocket Ship ispushing away from the planet the gravitational attraction between theRocket Ship and planet works both ways. And so the lose of momentumby the Rocket Ship because of the gravitational force is compensated bythe planets lose of momentum in the opposite direction !.
Why in a collision momentum is not always conserved?
In principle momentum is always conserved. However what sometimes happens in a collision is that energy is released that is then no longer considered part of the system. For example if two cars collide energy could be dissipated via the air and ground (e.g. heat) and this can also carry away momentum. Often, these effects are not taken into account and in that way momentum conservation appears to be violated; but if one takes care and takes into account all collision products the total momentum after is equal to the total momentum prior. So in short, any violation can be traced back to a redefinition of the system.
Why is momentum considered a very important quantity?
it takes less energy to maintain momentum than to acheive it.
What happens to the weight of a rocket when it takes off?
The mass of the rocket decreases as fuel burns.
Conservation of linear momentum explain?
The conclusion for a lab about the conservation of linear momentum is exactly that. Linear momentum is conserved. Momentum p = m*v is a product of mass and velocity. The larger the mass or faster the velocity, the higher the momentum. It takes prolonged force to stop it. Also, if a closed system exists that is not affected by dissipative forces, the total momentum of the system will remain. In a collision between two objects, momentum is conserved.
How did you explain conservation of momentum when a rocket ship takes off?
Momentum P of a body with mass m and velocity v is given by:P = m∙vNewton's first law of motion establishes conservation of momentum on abody as long as there is no net force applied on it.Let's assume our Rocket Ship is about to be launched from the surface ofa planet with no gravity force, so we can leave out the influence of thisforce from the discussion.At time t ≤ 0 from launch, the Rocket Ship's velocity v is zero, and soits momentum P is also zero.When the Rocket Ship starts his motion upwards, the initial system (theRocket Ship), is now conformed by two subsystems: The Rocket Ship goingup and the exhaust gases being sent down.To give a simple view of what happens, lets assume that the massof the exhaust gases is expelled at a constant velocity vg through the wholeprocess till the Rocket Ship's engine stops. Then the final condition ofmomentum would be:P = mR∙vR + mg∙vg = 0where mR and mg are the final Rocket Ship's mass and the total mass ofexhaust gases expelled respectively, and vR the Rocket Ship's final velocity.You have to realize that the vectors of velocity VR and Vg will have oppositesigns.If we now would want to include the planets gravity force, this willbe affecting the momentum of the Rocket Ship by producing an accelerationin the opposite direction of its velocity. If we now think of the originalsituation of Rocket Ship and planet at rest, when the Rocket Ship ispushing away from the planet the gravitational attraction between theRocket Ship and planet works both ways. And so the lose of momentumby the Rocket Ship because of the gravitational force is compensated bythe planets lose of momentum in the opposite direction !.
How does increase in mass affect the time taken?
Oh, it's tricky. But if you are in Physics 30 + it should be easy. First, the concept of Momentum and impulse is in here. So, first conservation of momentum law guarantees that the momentum before Math added is equal to the momentum after the mass added. Suppose the momentum is A. M : = Momentum = mv. v = M/m so velocity changes. So, if it's slower, does it takes longer or shorter time to travel the same distance? What about when velocity is faster. Remark: as m, mass, increases, the velocity decreases.
Why in a collision momentum is not always conserved?
In principle momentum is always conserved. However what sometimes happens in a collision is that energy is released that is then no longer considered part of the system. For example if two cars collide energy could be dissipated via the air and ground (e.g. heat) and this can also carry away momentum. Often, these effects are not taken into account and in that way momentum conservation appears to be violated; but if one takes care and takes into account all collision products the total momentum after is equal to the total momentum prior. So in short, any violation can be traced back to a redefinition of the system.
Why is momentum considered a very important quantity?
it takes less energy to maintain momentum than to acheive it.
How long does it take to get to the moon by rocket?
it takes 13 hours to get to the moon by a rocket
What happens to the weight of a rocket when it takes off?
The mass of the rocket decreases as fuel burns.
How long does it takes to make a rocket?
the answer depends on the type, size, and complexity of the rocket engine.
How does nwtons third law explain how a rocket takes off?
Newton's third law is that every action has a reaction that is equal in magnitude but opposite in direction. So, for a rocket, the rocket releases force in the backward direction (in the opposite direction it is moving) which enables it to go forward. You can try this at home using a balloon and a string.
What is the energy source for a rocket?
Rocket fuels are used. It contains chemical energy
What is momentum a mearsure of?
Momentum is a measure of how much force it takes to stop something in a certain amount of time. If it takes 10 N to stop object A in 30 sec and it takes 15 N to stop object B in 30 sec, then B has more momentum; 50% more momentum.
What planet takes 4 years to get to by rocket?
Jupiter
