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No. If the momentum of a pair of objects is zero sitll they can have kinetic energy.For example, in the case of bullet and gun, before firing the bullet the total momentum is zero and according to the law of conservation of momentum, the total momentum after firing the bullet will also be zero. But still they both will have kinetic energy.
What else can I help you with?
Can potential energy ever be less than kinetic energy?
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
How does kinetic energy and potential energy switch?
work=change in kinetic energy, doing work on an object by moving it up increases that object's potential energy because it has the POTENTIAL to fall due to gravity. kinetic energy is lost in the movement of the object. However, throughout an entire closed system, the total energy in joules (or kinetic enery plus potential energy) does remain constant. this is useful because the initial energy and the final energy most be equal, and if thats true, then initial kinetic energy plus initial potential energy must equal final kinetic energy plus final potential energy. does that help?
Why is the potential energy converted into kinetic energy?
Potential energy is converted into kinetic energy when an object moves from a higher position to a lower position due to the change in the gravitational forces acting on the object. As the object moves downward, it gains speed and its potential energy decreases while its kinetic energy increases. This conversion follows the law of conservation of energy, where energy is neither created nor destroyed but only changes form.
How does increasing the amount of stored energy affect the amount of kinetic energy when an object is released?
The "stored energy", or potential energy, will be converted to kinetic energy.Example:Let U = gravitational potential energy, K = kinetic energyU = mgh, where m is mass, g is theaccelerationdue to gravity, h is the height(there are other types of potential energy, but this is the most common example)K = 1/2mv2, where v is velocitySet U equal to K, because that potential energy will be converted to kinetic energy, minus any other factors that "steal" energy (i.e., friction):U = Kmgh = 1/2mv2
Why is a neutrino released during positron emission?
To preserve the conservation of; energy, momentum, and angular momentum in beta plus decay. Without the neutrino there is a measurable difference between the energy, momentum, and angular momentum of the initial and final particle. The neutrino rectifies this difference and it's existence was actually postulated before it was ever discovered!
An object that has linear momentum must also have?
Momentum. The formula for kinetic energy is: KE = .5 * m *v^2 The formula for momentum is: p = m * v If an object has kinetic energy, then both mass and velocity are non-zero, which implies that the momentum is also non-zero.
A moving object must have potential energy?
An object that has kinetic energy must have momentum, velocity, and speed. Momentum is mass times velocity. Kinetic energy is mass times velocity squared. Speed is distance divided by time. Kinetic energy is the energy of the object's motion. An object that has kinetic energy must have momentum because is the force or speed of movement. For example the ball gained momentum as it rolled down the hill. An object that has kinetic energy must have momentum, velocity, and speed because if an object is in motion (has kinetic energy) it must be either gaining, losing, or at a constant momentum, it must have a velocity (basically speed) and speed because when an object is in motion, it MUST have a certain velocity or speed.
In raising an object, must there be an increase in which type of energy that the object possesses?
Yes, in raising an object, there must be an increase in potential energy that the object possesses.
Can a body have momentum without having energy?
Any mass can be expressed in terms of energy, according to the famous formula, E=mC^2.Thus, any mass (m), having a momentum will always have some energy associated with it.
Can you have kinetic energy without momentum?
We don't think you can. Here's our reasoning: -- Kinetic energy of an object is [(1/2)(mass)(speed)2]. If kinetic energy is not zero, then mass can't be zero, and speed can't be zero either. -- Momentum of the object is [(mass)(speed)]. If mass isn't zero and speed isn't zero, then momentum isn't zero.
If an object has kinetic energy then it also must have?
Mass.
If an object has kinetic energy then it must also have potential energy?
Not necessarily. An object can have kinetic energy without having potential energy. For example, a moving car has kinetic energy but may not have any stored potential energy depending on its position.
How does an object with higher momentum move?
Momentum is the product of velocity and mass - so to have a "higher momentum", the object must either be more massive, or it must move faster.
What must be known in order to calculate the potential energy of an object?
To calculate the potential energy of an object, you need to know the object's mass, the acceleration due to gravity, and the height at which the object is located. The formula for potential energy is PE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height of the object.
To have momentum an object must be?
Momentum = m v (mass, velocity). If either one is zero, momentum is zero. So in order to have momentum, an object must have both mass and speed, in the frame of reference.
What is the relationship between work and negative potential energy?
The relationship between work and negative potential energy is that work is required to move an object from a higher potential energy state to a lower potential energy state. Negative potential energy indicates that the object is in a lower energy state compared to a reference point, and work must be done to move the object further away from this reference point.
If an object's mechanical energy is equal to its potential energy how much kinetic energy does it have?
Mechanical Energy= Potential energy+ Kinetic energy, so for the mechanical energy to be equal to be potential energy, the kinetic energy must be 0.
