Examples of vectors include displacement, velocity, acceleration, and force. To
fully
describe one of these vector quantities, it is necessary to tell both the magnitude and the direction. … To fully describe the object's velocity, both magnitude (25 m/s) and direction (e.g., south) must be stated.
Why is it important to indicate both magnitude and direction for velocity?
Velocity is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of bodies. Velocity is
a physical vector quantity
; both magnitude and direction are needed to define it.
What needs both magnitude and direction?
Vector
, in physics, a quantity that has both magnitude and direction.
Why is direction important in a vector?
To know the velocity of an object one
must know both how fast the displacement is changing and in what direction
. Therefore it is also well represented by a vector. Acceleration, being the rate of change of velocity also requires both a magnitude and a direction relative to some coordinates.
Should a quantity having both magnitude and direction be necessarily a vector?
It is a universal law in physics. If any quantity has direction and magnitude then it ought to be a vector quantity.
It is not necessary that a quantity
having both direction and magnitude is a vector. … Example: electric current has both magnitude and direction.
Does speed have magnitude and direction?
Speed is a scalar quantity. It does not change at all with direction changes; therefore, it
has magnitude only
.
What is the magnitude of velocity?
The magnitude of the velocity vector is
the instantaneous speed of the object
. The direction of the velocity vector is directed in the same direction that the object moves. Since an object is moving in a circle, its direction is continuously changing.
Which has magnitude as well as direction?
Force
has a well-defined magnitude as well as direction.
What has magnitude but no direction?
A quantity that has magnitude but no particular direction is described as
scalar
. A quantity that has magnitude and acts in a particular direction is described as vector.
Does distance have magnitude and direction?
5. What is the difference between distance and displacement?
Distance has both magnitude and direction
, while displacement has magnitude but no direction.
How do you calculate the direction of a vector?
The direction of a vector formula is
related to the slope of a line
. We know that the slope of a line that passes through the origin and a point (x, y) is y/x. We also know that if θ is the angle made by this line, then its slope is tan θ, i.e., tan θ = y/x. Hence, θ = tan
– 1
(y/x).
What is the difference between position vector and direction vector?
A position vector, which is a value of type Pos, represents an absolute position in 3D space. A direction vector, which is a value of type Dir, represents a direction, with distance, in 3D space.
How can we indicate the direction of a vector?
- The direction of a vector is often expressed as an angle of rotation of the vector about its “tail” from east, west, north, or south. …
- The direction of a vector is often expressed as a counterclockwise angle of rotation of the vector about its “tail” from due East.
Is possession of magnitude and direction sufficient for calling a quantity of vector explain?
No, it should follow the vector rules of addition, multiplication, etc. For example, electric current has both magnitude and direction, but still it is a
vector quantity
.
What is called if a body posses both magnitude and direction of velocity?
Step-by-step explanation:
vector
in physics a quantity that has both magnitude and directions.it is typically represented by an arrow whose direction is the same as that of the quantity and whose length is proportional to the quantities magnitude. although a vector has magnitude and direction it does not have position.
Does scalar quantity has both magnitude and direction?
Scalar quantities have only magnitude
; vector quantities have both magnitude and direction. Time is completely separated from direction; it is a scalar.
