Question

(1)Classify the measures as scalars and vectors,
Time period.

(2)Classify the measures as scalars and vectors,
Distance

(3)Classify the measures as scalars and vectors,
force

(4) Classify the measures as scalars and vectors,
velocity

(5) Classify the measures as scalars and vectors,
work done

Answer 1

(1) Vector quantity: A quantity which has a magnitude as well as a direction.
Scalar quantity: A quantity which has only magnitude.
Time period e.g., $100$ seconds has only magnitude.

$\therefore$ Time period is a scalar quantity.

(2) Vector quantity: A quantity which has a magnitude as well as a direction.
Scalar quantity: A quantity which has only magnitude.
Distance, e.g., $15$ meters has only magnitude.

$\therefore$ Distance is scalar quantity.

(3) Vector quantity: A quantity which has a magnitude as well as a direction.
Scalar quantity: A quantity which has only magnitude.
Force e.g., $20N$ downward has a magnitude i.e. , 20 N as well as a direction i.e., downward .

$\therefore$ Force is a vector quantity.

(4) Vector quantity: A quantity which has a magnitude as well as a direction.
Scalar quantity: A quantity which has only magnitude.
Velocity e.g., $51m/s$ west
It has a magnitude i.e. ,$51m/s$ as well as a direction i.e. , towards west.

$\therefore$ Velocity is a vector quantity.

(5)Vector quantity: A quantity which has a magnitude as well as a direction.
Scalar quantity: A quantity which has only magnitude.
Work done has only magnitude and no particular direction.

$\therefore$ Work done is a scalar quantity.