What does it mean when momentum is zero?

An object is said to have zero momentum when either the mass or the velocity is zero. Since the mass of the object cannot be zero, the velocity of the object must be zero for momentum to be zero. Velocity is zero for an object at rest.

Can objects in a system have momentum while the momentum of the system is zero?

Can objects in a system have momentum while the momentum of the system is zero? Explain your answer. Yes. Think of the two-car collision example.

What does positive momentum mean in physics?

Momentum is a vector. That means that momentum is a quantity that has a magnitude (or size) and a direction. The above problem is a one dimensional problem, so the object is moving along a straight line. In situations like this the momentum is usually stated to be positive to the right, and negative to the left.

How do photons have momentum but no mass?

In short, even though photons have no mass, they still have momentum proportional to their energy, given by the formula p=E/c. Because photons have no mass, all of the momentum of a photon actually comes from its energy and frequency as described by the Planck-Einstein relation E=hf.

Which of the following has a momentum of zero *?

Which of the following has a momentum of zero? mass. If two objects with different masses and traveling with different velocities collide, what law allows you to predict the motion of the objects after the collision?

Can an object have zero momentum but kinetic energy?

No , if a object has zero momentum then it doesn’t have kinetic energy because kinetic energy is half of linear momentum. where KE is kinetic energy and M is mass and V is velocity of the object.

Can a system of particles with zero total momentum have non zero total kinetic energy?

Two objects of equal mass moving with equal speeds in opposite directions have a total momentum of zero, but their total kinetic energy is definitely nonzero. Basically, the kinetic energy of a system can never be zero as long as there is any kind of motion going on in the system.

How is it possible that two objects have a net momentum equal to zero?

Object 1 is moving in the positive x-direction. It collides with a second object that is initially at rest. The collision is not head-on, so the objects move off in different directions after the collision. The total momentum in the -direction after the collision will be equal to zero.

Is momentum of a photon zero?

Relativistic Photon Momentum We know m is zero for a photon, but p is not, so that E2 = (pc)2 + (mc)2 becomes E = pc, or p=Ec p = E c (photons). p=hcλc=hλ p = h c λ c = h λ , as determined experimentally and discussed above. Thus, p=E/c is equivalent to Compton’s result p=h/λ.

When an object is moving it has a non zero momentum?

When an object is moving, it has a non-zero momentum. If an object is standing still, then its momentum is zero. To calculate the momentum of a moving object multiply the mass of the object times its velocity.

What is momentum in physics?

In classical physics this is the momentum of a mass (an object) as it moves along a straight line. Momentum is mass times velocity. When an object is moving, it has a non-zero momentum. If an object is standing still, then its momentum is zero.

How do you calculate momentum with MV and P?

p = m v. Where: p = momentum. m = mass. v = velocity. The Momentum Calculator uses the formula p=mv, or momentum (p) is equal to mass (m) times velocity (v). The calculator can use any two of the values to calculate the third.

What happens to momentum when velocity is changed by 1/4?

And, if you were to change the velocity of an object by a factor of 1/4, then the momentum of that object would also change by a factor of 1/4. Momentum is directly proportional to mass. If the velocity is kept constant, then the momentum of an object is directly proportional to its mass.