Physics
Mechanical Engineering

# Difference between scalar and vector?

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###### 2010-12-05 03:00:24

Scalars have no direction. Examples are temperature, cost, speed, energy.

Vectors have direction. Examples are velocity, torque, momentum.

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## Related Questions

A vector quantity includes a direction; a scalar does not.

A scalar quantity is only specific to magnitude, while a vector quantity describes both magnitude and direction. For example, speed is a scalar while velocity is a vector.

Direction. A scalar has only magnitude, while a vector has both magnitude and direction.

Vector quantity is a quantity characterized by magnitude and direction.Whereas,Scalar quantity is a quantity that does not depend on direction.

One difference between scalar processors and vector processors is their startup times, with vector processors needing prolonged startup due to multiple tasks. Another difference is that scalar processors operate on only one point of data at a time.

A scalar quantity is just a number e.g. 3 miles A vector quantity is a number with directions e.g. 3 miles south So the difference between them is that vector has a particular direction to go with but a scalar quantity is just a number.

There is a big difference between Scalar and vector quantity. Vector quantity means something where direction is not important.eg- Displacement(the shortest distance between the displacement points of an object). whereas in scalar quantity Direction is important. eg. Speed

A scalar has only size (amount, or quantity), example: a volume of liquid. A vector requires additionally a direction to define it ,examples: velocity, force.

The difference of a Joule of Work and Joule of Energy is the difference between a scalar and a vector, direction! Energy is a quaternion number consisting of a scalar energy and vector energy. Unfortunately, this fact is not realized by physicists. Work is defined as a scalar energy W=F.D = - FDcos(x) Vector energy is Torque T=FxD = FD sin(x).

Pressure is scalar but force is a vector. Pressure is defined as the force per unit area. As we multiply area vector by the pressure which is scalar, we get the force vector. This is similar to get momentum vector by multiplying velocity vector by the mass which is scalar. Unit of force is newton but unit for pressure is N m-2

A quantity is a vector if its direction makes a difference, like force and speed. A quantity is a scalar if its direction doesn't make any difference, like temperature and price. Answer2: The difference between a vector and a scalar is the angle. Numbers in Physics are scalars and vectors. Both scalars and vectors are parts of a quaternion. Quaternions consist of a scalar and a three vectors, Q = w + Ix + Jy + Kz = |Q|(cos(Q) + v Sin(Q)) . Real and complex numbers are subsets of quaternions. The difference between a vector and a scalar is the angle of Q. If he angle is a even multiple of 90 degrees, the quaternion is a scalar; positive scalars are multiples of 4 and negative scalars are multiples of 2. If the angle is an odd multiple of 90 degrees, the quaternion is a vector. If the angle is not a multiple of 90 degrees, the number is both a scalar and a vector. It is likely that most quantities in physics are quaternions with both scalar and vector parts.

A scalar is just a number. A vector is a row or column of numbers. For example: 6 is a scalar while (1, 0, 23.5) is a vector.

Scalar and vector quantities give magnitude, and that makes them similar. The difference is that the vector quantity gives direction as well as magnitude.

A vector is a quantity with a direction that matters, like force, velocity, acceleration, etc. A scalar is a quantity with no direction, like temperature, cost, mass, etc.

A scalar times a vector is a vector.

Scalar pipelining offers an alternative to vector pipelining whereby the cycles are used in a linear fashion. Vector pipelining performs vector computations.

(vector) times (vector) produces either a vector or a scalar, depending on whether the vector product or scalar product is performed. (vector) times (scalar) produces a new vector.

velocity is speed with direction; velocity is a vector and speed is a scalar

Vector is NOT a scalar. The two (vector and scalar) are different things. A vector is a quantity (measurement) in which a direction is important. A scalar is a quantity in which a direction is NOT important.

A vector has a magnitude and a direction. A scalar is only a magnitude. For example, If I say that I am going 60 m/s, that I have described my speed as a scalar value. If I say I am going 60 m/s due east, I have described both my speed and direction and therefore it is a vector.

The product of scalar and vector quantity is scalar.

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