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Wednesday, 21 January 2015

Momentum

momentum


When a car breaks down, as is the case of engraving, we conducted a force so we can put it moving again. This is the intuitive motion of momentum.

This is the force that determines the action of forces on a body, ie, the magnitude measures the effort required to put a body in motion. Mathematically speaking, this is the formula that describes the drive, see:

I = F.t

Where F is the force applied on the body and t is time to force action.

The momentum is a vector quantity and as such, you’re complete and accurate determination. It has magnitude and direction. In the International System of Units (SI) unit is the Ns (newton per times second).

As you can see, to push a certain car, as in the example above, the same acquires movement that is proportional to its mass and the force that is applied on it. Such observation makes it possible to establish a relationship between the impulse and the momentum acquired by the body. The formula determines the amount of movement acquired by a body can be stated as follows:

The amount of motion, also called the linear momentum, Q, a mass mq body moves with velocity v is defined by the following expression:

Q = m.v

Where m is the mass of the body v speed it acquires after the application of force on it. The amount of movement, as well as the momentum is a vector quantity, so it also has magnitude and direction. The unit in the SI is kg. m / s.