HELP!!!! Difference beween SCALARS and VECTORS?

Answer 1

A scalar requires only magnitude to define it, in other words just one statement about size is required. For example temperature in a scalar, only one comment about size is necessary; it is 14 degrees Celsius. The same can be said for time: it is 2pm.

A vector however requires both magnitude and direction to define it, for example a force is described by both its size and the direction in which it is acting.

One last example we can describe a car's speed as 40mph (speed is a scalar), but to describe a car's velocity (vector) we must add a direction, e.g. 40mph in the direction South East.

Answer 2

Scalars Vs Vectors

Answer 3

I walked six miles...that's a scalar.

I wallked six miles north...that's a vector.

Simple as that, a scalar with direction given is a vector. A scalar without direction remains a scalar.

The nice thing about scalars is that you can apply the four operations (add, subtract, multiply, and divide) to them just like you learned to do in grade school. But because vectors always have direction as well as value (the scalar part), even simple addition may not be simple any more.

For example, if I have a right triangle with a base of 3 units and a height of 4 units, what do I get when I add the base vector to the height vector? The answer might surprise you...it's 5 at some angle off the base. The base and height are vectors because they have direction as well as value. And the answer, which is the hypoteneuse of the right triangle is also a vector.

Vectors are very useful in engineering and physics because forces are vectors. Thus, when we say, F = ma we mean a force acting in the same direction as the acceleration. They both are vectors.

Answer 4

A scalar requires only magnitude to define it, in other words just one statement about size is required. For example temperature in a scalar, only one comment about size is necessary; it is 14 degrees Celsius. The same can be said for time: it is 2pm.

A vector however requires both magnitude and direction to define it, it also must be noted that it follows vector algebra for example a force is described by both its size and the direction in which it is acting.

One last example we can describe a car s speed as 40mph (speed is a scalar), but to describe a car s velocity (vector) we must add a direction, e.g. 40mph in the direction South East

Answer 5

A scalar is just a magnitude.One metre or one foot are both SCALARS. A vector is a magnitude plus a direction. For example 10 miles North is a vector.

Answer 6

Scalars are defined only by magnitudes.But a vector must be defined by its magnitude & direction.

The addition, substraction of two scalars can be performed in simple algebraic method.But Vector algebra is needed to add or substract two vectors.

Example of scalar:- Mass
Example of vector:- Weight

Look that, mass has no direction, but Weight has a direction (The direction of gravitational force).

Answer 7

scalars specify only the magnitude of any quantity whereas vectors also tell us the direction
for eg-
distance travelled is a scalar quantity
displacement is a vector
for more details consult XI class physics books

Answer 8

Scalars are quantities which are fully described by a magnitude alone.
Vectors are quantities which are fully described by both a magnitude and a direction.

Answer 9

scalars r defined by only magnitude.eg:speed
n vectors also require direction in addition to magnitude.eg:velocity

Answer 10

scalar quantities: quantities involving only a given magnitude (examples: temperature, time, mass)


vector quantities: quantities which require both a magnitude and a given direction (for a complete description, examples: displacement, velocity, force, acceleration)