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The answer to both of your questions lies in the different nature of both quantities, momentum and kinetic energy. Momentum is a vector, kinetic energy is a scalar. This means that momentum has a magnitude and a direction, while kinetic energy just has a magnitude. Consider the following system: 2 balls with equal mass are rolling with the same speed to each other. Magnitude of their velocities is the same, but the directions of their velocities are opposed. What can we say about the total momentum of this system of two balls? The total momentum is the sum of the momentum of each ball. Since masses are equal, magnitudes of velocities are equal, but direction of motion is opposed, the total momentum of the system of two balls equals zero. Conclusion: the system has zero momentum. What can we say about the total kinetic energy of this system? Since the kinetic energy does not take into account the direction of the motion, and since both balls are moving, the kinetic energy of the system will be different from zero and equals to the scalar sum of the kinetic energies of both balls. Conclusion: we have a system with zero momentum, but non-zero kinetic energy. Assume now that we lower the magnitude of the velocity of one of the balls, but keep the direction of motion. The result is that we lower the total kinetic energy of the system, since one of the balls has less kinetic energy than before. When we look to the total momentum of the new system, we observe that the system has gained netto momentum. The momentum of the first ball does not longer neutralize the momentum of the second ball, since the magnitudes of both velocities are not longer equal. Conclusion: the second system has less kinetic energy than the first, but has more momentum. If we go back from system 2 to system 1 we have an example of having more kinetic energy, but less momentum. I hope this answers your question Kjell
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoNo, an object cannot have kinetic energy and no momentum. Here's the reason: Kinetic energy is the energy an object derives from being in motion. If an object is moving, it has some non-zero velocity. Momentum is the product of mass (which the object will have) and velocity, which it must exhibit to have kinetic energy. That is why an object cannot have kinetic energy with no momentum.
Wiki User
∙ 15y agoThe Kinetic Energyof an object is described by the expression 1/2 mv2.
Momentum is described by mv. As both Momentum and Kinetic Energy are a product of only the mass and velocity of an object if you change the mass/velocity of the object to increase K.E. then you must also increase it's momentum. Don't blame me, blame the laws of the Universe!
Wiki User
∙ 13y agoWell it is not possible as the law of conservation of energy states that energy can neither be created nor be destroyed it can be just transformed from 1 for to another.
Hence P.E can never be Less than kinetic energy.Both the energy are always balanced.
P.E=the energy posesed by a body due to the height gained or due to is configuration
So P.E is minimum at ground level.
Wiki User
∙ 13y agoNo, momentum and kinetic energy for all classical particles depend only on their mass and their velocity.
Due to the fact that momentum and KE both depend on the same factors, they cannot be changed independently.
Kinetic energy = 0.5mv2
Momentum = mv
Wiki User
∙ 12y agoMomentum = mass x velocity
Kinetic Energy = 0.5 x mass x velocity2
If momentum equals zero, the only logical thing to assume is that the velocity equals zero. If the velocity equals zero for momentum, the velocity for your kinetic energy formula is also equal to zero. Anything multiplied by zero is zero, so kinetic energy would be zero if momentum is zero. So the answer is no.
Wiki User
∙ 11y agoNo.
momentum = m• v, where m is mass in kg and v is velocity in m/s.
KE = 1/2mv2, where m is mass in kg and v is velocity in m/s.
Since its one object, the mass and velocity would be the same. If the mass is 50kg and the velocity is 10m/s, momentum would be 500 kg•m/s, and KE would be 2500 Joules.
Wiki User
∙ 16y agoNo, because in order to have momentum, an object must have velocity. Velocity cannot be obtained without kinetic energy.
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Is total energy of revolving electron in an atom zero?
actually total energy is the sum of potential energy and kinetic energy....potential energy= -2*kinetic energy . By using this relation you will get that sum of potential and kinetic energy is equal to the magnitude of kinetic energy and it is less than zero...hope this will be enough for you....
What happens to the molecules in a glass of water as the water evaporates?
The energy of a molecule is made up of potential and kinetic. so as kinetic increases, potential decreases. Also as when molecule is in gaseous state, the distance between molecules is much greater than that in a liquid, so the potential energy is less as a gas NOTE a molecule has potential energy when it is a certain distance away from its equilibrium position between adjacent particles during its vibrations in a liquid. Kinetic energy is motion energy. SO in there is less attraction between adjacent molecules, so potential energy is less.
Which has less kinetic energy warmer particles or cooler particles?
Cooler particles have less kinetic energy.
Why do planets or comets move faser when theyare closer to the sun?
This can be explained in several ways; here is one way. This follows directly from conservation of energy. Closer to the Sun they have less potential energy, so it is logical that they should have more kinetic energy. The sum of kinetic and potential energy remains constant (assuming no energy gets dissipated).
Is kinetic energy always less than the potential energy?
noYes they can, in a solution of a single type of atoms, at absolute zero; This is the point at which something physically has zero energy (none in the molecules whatsoever), and there would be no potential energy in the bonds between molecules
Is total energy of revolving electron in an atom zero?
actually total energy is the sum of potential energy and kinetic energy....potential energy= -2*kinetic energy . By using this relation you will get that sum of potential and kinetic energy is equal to the magnitude of kinetic energy and it is less than zero...hope this will be enough for you....
How can potential energy be increased and decreased?
Potential energy is pretty much the potential for kinetic energy. The less kinetic energy there is, the more potential... On the other hand, if you need gravitational potential energy, then the higher the object is placed above the ground, the more GPE it has.
Does something have grater speed when it has more potential energy or less?
It can be a little complicated but I'll do my best to explain.Quick Vocab: potential energy - the stored energy in an object because of its position, shape, or condition. Kinetic energy - the energy of an object due to its motion. The more potential energy an object has the more Kinetic energy it will have. Basically when the object is moved the potential energy is released and becomes kinetic energy. As the kinetic energy (speed) increases the Potential energy decreases.So yes, when the potential energy decreases the speed increases.
Why is potential energy greater than kinetic energy?
It isn't so. Potential energy can be greater, or less, for a given object, depending on its position and its speed.
Why would the final kinetic energy before impact be less the initial potential energy of an object dropped from a kilometer height?
It is easiest to think of initial potential energy as the "distance" the object is able to fall. If it has not fallen the distance yet, then of course kinetic energy would be less.
What happens to the potential energy and kinetic energy of a ball as it rolls down a hill from a position of rest at the top of the hill?
The potential energy gets less until the ball gets to the bottom of the hill, at which point the potential energy is zero. The potential energy that is lost, gets converted to Kinetic energy of the ball that goes faster and faster as it gets more and more of the Potential energy.
What happens to the potential energy and the kinetic energy of a ball as it rolls down a hill from a position of rest at the top of a hill?
The potential energy gets less until the ball gets to the bottom of the hill, at which point the potential energy is zero. The potential energy that is lost, gets converted to Kinetic energy of the ball that goes faster and faster as it gets more and more of the Potential energy.
Is running an kinetic or potential energy?
The potential energy of the mass of the sky diver is transformed into kinetic energy during the free fall. The kinetic energy of the free fall is transformed into kinetic energy and heat of the air when the parachute is deployed.
What happens to the molecules in a glass of water as the water evaporates?
The energy of a molecule is made up of potential and kinetic. so as kinetic increases, potential decreases. Also as when molecule is in gaseous state, the distance between molecules is much greater than that in a liquid, so the potential energy is less as a gas NOTE a molecule has potential energy when it is a certain distance away from its equilibrium position between adjacent particles during its vibrations in a liquid. Kinetic energy is motion energy. SO in there is less attraction between adjacent molecules, so potential energy is less.
What energy transformation occurs in a pencil sharpener?
mechanical energy
What are the effects of potential energy and kinetic energy to 3 states of matter?
Kinetic energy effects changes of state because it is when energy that has been held up inside the object (aka potential energy), is finally released. For example: On a roller coaster, the cart goes up a hill. At the top of the hill, right before it is about to go down another hill, it has potential energy, or stored up energy. Then whe it is going down the hill, all the energy is released and now the energy is in the form of kinetic. Another example: A marble is attached onto the end of a string. You pull the marble back. While being held back, the marble has potential energy. When you let the marble go, that energy turns into potential energy, because it is in motion. Defintions: Potential energy: Energy that is stored up Kinetic energy: Energy in motion
What happens to the potential energy of the water in a river as gravity pulls the water downhill?
Since potential energy is proportional to elevation, the potential energy of water gets less and less as it goes downhill.Its kinetic energy (based on velocity) may well increase, but the question asked about potential energy.
