GK
PHYSICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
a quantity that has only magnitude
|
|
|
a quantity that has both magnitude and direction.
|
|
|
a quantity that has only one direction
|
|
|
a quantity that has magnitude but may or may not have direction
|
Detailed explanation-1: -vector, in physics, a quantity that has both magnitude and direction. It is typically represented by an arrow whose direction is the same as that of the quantity and whose length is proportional to the quantity’s magnitude.
Detailed explanation-2: -Vector quantities have two characteristics, a magnitude and a direction. Scalar quantities have only a magnitude. When comparing two vector quantities of the same type, you have to compare both the magnitude and the direction. For scalars, you only have to compare the magnitude.
Detailed explanation-3: -Quantities that need both magnitude and direction to describe them are called vector quantities. Examples: Displacement, velocity, force, area, etc.
Detailed explanation-4: -When two or more vectors are added, the result is a single vector called the resultant vector. The resultant of two or more vectors is that single vector which alone produces the same effect as that produced by the two individual vectors.