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Simply because physicists discovered that it is a product that is conserved.
In collisions of two objects for example, if you add up the momentum before the collision the momentum will be the same after the collision.
Note that momentum is not something that has a concrete reality.
A rock sitting on the ground has zero momentum relative to us here on earth but has alot of momentum relative to someone on mars. It can not have zero momentum and alot of momentum at the same time, it depends on ones frame of reference. My point is that momentum is not at 'concrete" thing.
Refer to the 'Conservation of linear momentum' in Wikipedia.org, "The World's Encyclopedia"
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Is momentum and energy the same?
No. KE = 1/2mv2, and momentum = m•v, where m is mass in kg and v is velocity in m/s.
When a 3.8 kg rifle fires a 13 gram bullet it experiences a recoil velocity of 2.4ms-1Calculate the velocity of the bullet?
Before the shot, total momentum of the rifle/bullet system is zero. Momentum is conserved, so must total zero after the shot. Magnitude of momentum = m V (mass, speed); we'll take care of direction independently. Momentum of the rifle: m V = (3.8) x (2.4) = 9.12 kg-m/sec backwards. We need momentum of the bullet = 9.12 kg-m/sec forward m V = 9.12 ===> V = ( 9.12 / m ) = ( 9.12 / 0.013 ) = 701.54 m/s forward
What is the mass of an object multiplied by its velocity?
The product of mass and velocity of an object is its momentum.
What is Change in momentum times time?
Impulse = [(change in momentum)/time]*time[(change in momentum)/time] = ForceAnd when force acts for a period of time, that impulse changes the momentum of the object.You can also rewrite the impulse equation as: I = F*tHowever, for change in momentum times time, the units would be (kg*m/s)*(s) = kg*m. These units are not in common usage.
How do you find momentum weight and velocity?
First you have to convert weight into mass. This is dependent on the acceleration the mass is experiencing (either gravitational or centrifugal). If it is gravitational and it is at or near the surface of the Earth then mass=weight/9.81m/s2 If it is centrifugal then a=v2/r and mass=weight*r/v2 Then to find momentum just multiply mass by velocity.
Does a fish have momentum?
The momentum of any object is [ M V ]. 'M' is its mass, 'V' is its velocity. If the fish is moving, then [ M V ] is not zero, and it has momentum.
What is momentum is equal to?
Momentum equals mass times velocity, it is sometimes written as p=m*v.
What is the formula to calculate momentum?
Momentum (p) is mass (m) times velocity (v), so p = mv
How are velocitymassand momentum related?
momentum is the product of mass and velocity. p for momentum m for mass and v for velocity. (p=m*v)
What is the relationship of the speed of an object and its momentum?
Momentum (p) is equal to mass (m) times velocity (v), so p = mv
Is momentum a vector quantity?
Yes momentum is a vector quantity. Because p = m v. As m is scalar and v is vector then p the momentum has to be a vector. Here m is mass and v is velocity
A 4.5kg ham is thrown into a stationary 15 kg shop cart At what speed will the cart travel if the ham had an initial speed of 2.2 ms?
m = 4.5kg v = 2.2m/s M = 15kg V = ? ---- velocity of ham and cart before: momentum of ham = pv momentum of cart = 0 after: momentum of ham and cart = (m+M)V momentum of ham + momentum of cart = momentum of ham and cart mv + 0 = (m+M)V mv / (m+M) = V (4.5*2.2) / (4.5 + 15) = 0.51 kgm/s
How do you calculate momentum?
Momentum = mass x velocity. Using standard terminology, p = mv. Δp = m v - m0 v0 (Change in mass = mass x velocity - initial mass x initial velocity ) If your mass stays the same, this can be simplified to Δp = m ( v - v0 )
How do you determine the momentum of a moving object?
Momentum is the product of mas and velocity . Its unit is kgm/s. P = m*v where P = momentum, m = mass v = velocity
Does a plane flying through the air have a momentum of zero?
No, it does not have a momentum of zero because the formula for momentum is p = m x v, therefore since the plane has a mass and it is moving, there is momentum.*p = momentum*m = mass (kg)*v = velocity (m/s)
How do you solve for momentum?
Momentum, p, is solved by using the momentum equation: p = m*v.
How do you find momentum?
p=m*v
