momentum = mass * velocity
kinetic energy = 1/2 mass * velocity^2
If an object has non-zero momentum, it has non-zero velocity. It thus has kinetic energy, at least. It most likely has other forms of energy as well (potential, thermal, etc.)
yes. a body can have energy without momentum also. consider a body at a height 'h' m above the ground level , potential energy contained is = mgh but , as the velocity is 0 we can consider that the momentum of the body is 0
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.
Sure. A bowling ball sitting on the top shelf in the closet has a great deal of potential energy. But it's not moving, so its momentum is zero. And let's not forget the heat energy in a glass of water, the chemical energy in a gallon of gasoline, or the electrical energy in a battery ?
No.
Momentum = (mass) x (speed) Kinetic Energy = 1/2 (mass) x (speed)2 It looks like the only way a body can have zero momentum is to have either zero mass or else zero speed, and if either of those is zero, then that makes the KE also zero as well, too. So the answer to the question is apparently: no.
No, due to factors like friction and wear, a machine with moving parts will eventually lose energy and momentum, causing it to stop without additional energy input.
A body can't have kinetic energy without also having momentum. But it can have any otherkind of energy ... the ones that don't involve motion. A charged battery, a stretched rubber band,a can of gunpowder in a drawer, a bowling ball on a high shelf, a gallon of water behind HooverDam on a calm day, and a coil of wire carrying an electric current, all have plenty of energy butno momentum.
Momentum is the mass of an object multiplied by its velocity, while kinetic energy is the energy an object possesses due to its motion. Momentum is a vector quantity, meaning it has both magnitude and direction, while kinetic energy is a scalar quantity, only having magnitude. In the context of physics, momentum is related to the amount of motion an object has, while kinetic energy is related to the work needed to accelerate an object to its current speed. The two are related in that an object's kinetic energy is directly proportional to its momentum.
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
Your front porch.
Having a strong feeling for someone/somthing
The larger the momentum, the harder it will be to stop it. Thus, the larger the force needed to decelarate the object. Since momentum is directly proportional to the velocity, the larger the momentum, the larger the velocity.