What Does Momentum Mean




What Does Momentum MeanWe have to apply breaks to stop the moving car. It is because the car has gained something referred to as Momentum. Let us study what is Momentum? What happens to the body after getting some motion?

These are certain points which explains the basics of momentum:

It is the product of object's mass and its velocity (moving object).

It is a vector quantity and has got identical direction as that of Velocity.

The higher the mass or weight the more is the momentum.

It is an indication of how tough or difficult it could be to stop a moving thing.

Change in Momentum

We know that,

P = m v

If we think about the velocity to be the initial and final velocity represented by u and v then momentum change or

The change in momentum could be expressed as:

P = m (v u)

P = mv mu

$\Delta P$ = m $\Delta$ v

Therefore, the change in momentum is the same to mass times the change in velocity. Here mu is the Initial Momentum and mv is the Final Momentum. The change in momentum is also known as Impulse.

The momentum described and used in relativistic mechanics is referred to as Relativistic Momentum. In relativistic mechanics the momentum is described as follows:

P = y mo v . . . . . . . . . . . . . . . . . . . (1)

Here y is the Lorentz factor.

It is equivalent to,

y = $\frac1\sqrt{1-\frac{v^{2}c^{2}}}$

Here,

v is the object's speed

c is the light's speed

mo is the invariant mass

Also the inverse relation could be expressed as:

v = $\fracc^{2P}\sqrt{(pc)^{2 + (m_0c^2)^2}}$

Where P = $\sqrt(P^{2x + P^2y + P^2z)}$

Units of Momentum

The units for momentum could be mass units times velocity units. The standard metric unit of momentum is actually the kgm/s. While the kgm/s is the common metric unit of momentum, you can find a variety of other units which are acceptable units of momentum.

Examples contain kgkm/hr, kgmi/hr and gcm/s. In each of these examples, a mass unit is multiplied by a velocity unit to give a momentum unit. This is constant with the equation with regard to momentum.

Momentum can be described as mass in motion. All objects possess mass; so if an item is moving, then it provides momentum, it has its mass in motion. The sum of momentum that an item has is based mostly on two variables: how much things is moving and how quickly the stuff is moving. 





Latest Articles


Interesting Facts about Platinum

Scientists analyzed samples of the metal following European exploration of the region started. Platinum has been used by ancient people in Central and South America.

Cool Facts about Gold

Not many chemicals can attack gold, so thats why it maintains it shine even when buried for 1000s of years. When compared with other metals, gold is much softer. One can beat 1 gram of gold to a 1 square meter sheet and light would shine via that sheet.

Interesting Facts about Wind Energy

One wind turbine can power as much as 500 homes. Wind mills date all the way back to the year 2000 BC where they were utilized in China.

Interesting Facts about Fruit

Fruit is beautiful, tasty and great for all us. Fruit is also interesting. Listed here is a brief collection of interesting facts about fruit.

Facts about the Rock Cycle

Liquid rock which cools quickly after exposure to the Earths atmosphere are fine-grained and known as extrusive. Obsidian is an example of this kind of rock.