SCALAR QUANTITY VS VECTOR QUANTITY
Scalar Quantity |
Vector Quantity |
Definition: SCALAR QUANTITY is those physical quantities which have
only magnitude, no direction. |
Definition: VECTOR QUANTITY is those physical quantities which have
both magnitude as well as direction. |
SCALAR QUANTITY is always 1-dimensional. |
VECTOR QUANTITY can be 1-D, 2-D, or 3-D. |
SCALAR QUANTITY changes with change in its magnitude. |
VECTOR QUANTITY changes with change in its magnitude or direction or
both. |
SCALAR QUANTITY obey algebraic rule for operation such as addition
and multiplication. |
VECTOR QUANTITY obey vector algebra rule for operation such as
addition and multiplication. |
SCALAR QUANTITY can divide another scalar quantity. |
VECTOR QUANTITY cannot divide another vector quantity. |
SCALAR QUANTITY can be represented by an ordinary letter. |
VECTOR QUANTITY can be represented by a letter with a cap or arrow on it.
|
SCALAR QUANTITY is described by a number and a suitable unit. |
VECTOR QUANTITY is described by a number, a suitable unit, and its
direction. |
SCALAR QUANTITY when multiplied with a scalar quantity always remains
a scalar quantity. |
VECTOR QUANTITY when multiplied with a vector quantity can be a
vector quantity or a scalar quantity. |
Distance, Speed, Mass, etc. are SCALAR QUANTITIES |
Displacement, Velocity, Acceleration, etc. are VECTOR QUANTITIES. |
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