Can an object that have kinetic energy have momentum as well?

Can a body have kinetic energy without having momentum?

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.

Can an object have kinetic energy but no momentum?

Well, honey, technically speaking, yes, an object can have kinetic energy without momentum. See, momentum depends on both an object's mass and velocity, while kinetic energy only cares about velocity. So, if you have an object with mass but no velocity, it won't have momentum but can still have some kinetic energy.

Can somthing have momentum without having energy?

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.)

What happens to kinetic energy when you decrease the mass?

Kinetic energy = K.E. = 1/2 (m)(v)2. Since mass, m, is part of this equation, we see that two particles of equal velocity but of different masses have different kinetic energies. In the case of equal velocities, the particle with the lesser mass will have the lower kinetic energy. Remember that momentum is the derivative of K.E., and so the momentum of an object is also related to the mass of an object as well.

Why does heavier object have a greater momentum if light and heavy object have the same kinetic energy?

Well, the equation for momentum is mass x velocity. So, p (momentum)= m x v. The equation for kinetic energy is m x v(squared)/2. Let's say that there are two objects. One is 50 kg, and the other is 30 kg. These objects can both have the same kinetic energy, even though one of them has a larger mass. The determining factor in them both having the same kinetic energy, even though one of them has a larger mass is because of different velocities. The 50 kg object has a velocity of 7 meters/second, and the 30 kg object has a velocity of 9.036961141 meters/second. If you do the math, they both have the same kinetic energy (about the same). 50 kg x 7 m/s = 350 kg x m/s. 30 kg x 9.036961141 = 271.1088342. There is an inverse relation between the momentum of an object and its mass. The mass is the factor that influences momentum more than the velocity; that is why an object with a greater mass will have a greater momentum than the one with a lesser mass, only if they both have the same kinetic energy.

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

Does kinetic energy actually increase the speed of an object?

Gaining kinetic energy 'E' amounts to saying that the momentum of an object increases. E = p^2 / 2m where p is momentum and m is mass. (Momentum is just mass times speed.) So, to increase the speed the kinetic energy has to change. In other words, if you set the kinetic energy to any value you like and keep it constant, there won't be a speed up. What is the change in kinetic energy? You can just as well ask what is the change in momentum. Physicists have chosen the latter question and call the change in momentum 'the force'. F = dp / dt where F is force and d/dt means derivation with respect to time. It is the pushing force acting on objects that makes them gain speed. Kinetic energy is usually something that you calculate at the end when you have found out what the forces in your problem are and what the momentum is as a function of time.

If kinetic energy is increased by 60 percent then momentum will be?

Kinetic energy is proportional to the square of the speed; use this fact to calculate the increase in speed (60% increase means an increase by a factor of 1.6). Momentum is proportional to the speed.

When is kentic energy the greatest?

An object has the most kinetic energy when it is moving at its maximum speed. Kinetic energy is directly proportional to an object's mass and the square of its velocity, so as speed increases, so does kinetic energy.

What is the speed of an object increases its kinetic energy .?

The kinetic energy depends on both mass and speed. If either mass or speed increase, the kinetic energy will increase as well.

What is the relationship between centripetal kinetic energy and the motion of an object in circular motion?

Centripetal kinetic energy is the energy associated with an object's motion in a circular path. It is directly related to the speed and mass of the object, as well as the radius of the circular path. As the object moves in a circular motion, centripetal kinetic energy is constantly changing to keep the object moving in a curved path.

How kinetic energy and potential energy vary?

Well, the most potential energy is when your going slow or your stopped. The most kinetic energy is like at the bottom of a hill over the first hump in a rollarcoaster, when your going your fastest. Your speed and probably friction will affect it.