Question

distinguish between
speed & velocity
distance & displacement
scalar and vector quantatity

Answer 1

Answer:

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.

Scalar quantities

Scalar quantities only have magnitude (size).

For example, 11 m and 15 ms-1 are both scalar quantities.

Scalar quantities include:

distance

speed

time

power

energy

Scalar quantities change when their magnitude changes.

Vector quantities

Vector quantities have both magnitude and direction. For example, 11 m east and 15 ms-1 at 30° to the horizontal are both vector quantities.

Vector qualities include:

displacement

velocity

acceleration

force

weight

momentum

Vector quantities change when:

their magnitude changes

their direction changes

their magnitude and direction both change

The difference between scalar and vector quantities is an important one.

Speed is a scalar quantity – it is the rate of change in the distance travelled by an object, while velocity is a vector quantity – it is the speed of an object in a particular direction.

Answer 2

Answer:

Scalar Quantity:It has only magnitude no direction.

Vector Quantity: It has both magnitude and direction.

Scalar Quantity: 1 dimensional.

Vector Quantity: It is associated with more than 1 dimensions

Scalar Quantity: Scalar can divide each other.

Vector Quantity: Vector cannot divide each other.

Scalar Quantity: Example: Mass, length, time etc

Vector Quantity: Example: Velocity, displacement, acceleration etc