Velocity is a vector quantity which expresses both the object's speed and the direction of its motion; therefore, the statement that the object's velocity is constant is a statement that both its speed and the direction of its motion are constant.
42.
Since Newtonian mechanics considers vector quantities of motion, particularly accelerations, momenta, forces, of the constituents of the system, an alternative name for the mechanics governed by Newton's laws and Euler's laws is " vectorial mechanics ".
43.
As in the previous section, we denote the positions of the masses by, as measured from their equilibrium positions ( i . e . = 0 if the particle is at its equilibrium position . ) In two or more dimensions, the are vector quantities.
44.
It can be seen that the vector form of the equation is the same as the scalar form given earlier, except that "'F "'is now a vector quantity, and the right hand side is multiplied by the appropriate unit vector.
45.
Force is a vector quantity, which means that it has a magnitude and a direction, and it is usually denoted using boldface such as "'F "'or by using an arrow over the symbol, such as \ scriptstyle \ vec F.
46.
"' Metre per second "'( American English : "'meter per second "') is an SI derived unit of both speed ( vector quantity which specifies both magnitude and a specific direction ), defined by distance in metres divided by time in seconds.
47.
In physics, the "'angular velocity "'is defined as the rates of change of angular displacement and is a vector quantity ( more precisely, a pseudovector ) that specifies the angular speed ( rotational speed ) of an object and the axis about which the object is rotating.
48.
Synchrotron radiation would cause the orbiting electron to lose orbital energy and spiral inward since the vector quantity of acceleration of the particle multiplied by its mass ( the value of the force required to keep the electron in circular motion ) would be less than the electrical force the proton applied to the electron.
49.
There is another vector quantity not often discussed it is the time-varying moment of mass ( " not " the moment of inertia ) related to the boost of the centre of mass of the system, and this combines with the classical angular momentum to form an antisymmetric tensor of second order.
50.
:: : : Well as I read it, the " cloud " does have momentum and this would thus be either in one direction or another ( as a non-zero vector quantity must be ) and so these effects will be observed .-- List of good deeds 23 : 35, 8 February 2013 ( UTC)
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