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Momentum Formula
“Mass in motion” is what the term “momentum” alludes to. Because all objects have mass, they also have momentum when they move because mass is also moving.
The quantity of material moving and the speed at which it moves are two parameters that define an item’s momentum. Momentum is influenced by velocity and mass. The product of a system’s mass and velocity is called linear momentum.
Formula
Newton’s Laws of Motion indicate that all bodies in motion or at rest remain in that place until they are interfered with or by an external force. The same idea is applied to the formula for calculating momentum.
There will be no change in the object’s momentum if its velocity and mass remain unchanged.
Where p represents momentum, m is the mass, v is the velocity with which the object is moving.
When there is a change in the momentum of an object, it is usually due to a change in the object’s velocity. It is therefore necessary to find the product of the moving body’s mass and the change in its velocity to determine the change in the momentum formula. The formula can be created as
Δp = m(Δv) =m (vf – vi)
The final and starting velocities are indicated by vf and vi, respectively. When velocities fluctuate, it’s critical to use the correct indications. This is how pupils will be able to compute momentum.
We can now use this formula to calculate the magnitude of the net external force.
Fnet = Δp/Δt
Solved Examples
1. (a) Determine the momentum of a 110-kilogramme football player moving at 8 metres per second.
Substitute the known numbers for the player’s mass and speed into the equation to determine the player’s momentum.
pplayer = (110 kg) (8 m/s) =880 kg m/s
2. An automobile with a mass of 600 kg is travelling at a speed of 10 m/s. Determine the momentum of the situation.
Given:
m = 600 kg,
v = 10 m/s Velocity
The term “momentum” refers to how fast something moves.
mv = p
600 x 10= 6000 Kg ms-1
