## Book: Mathematics Part-II

### Chapter: 10. Vector Algebra

#### Subject: Maths - Class 12th

##### Q. No. 2 of Exercise 10.1

Listen NCERT Audio Books - Kitabein Ab Bolengi

2
##### Classify the following measures as scalars and vectors.(i) 10 kg (ii) 2 meters north-west(iii) 40° (iv) 40 watt(v) 10-19 coulomb (vi) 20 m/s2

Scalars are defined as quantities that have magnitude only.

Vectors are defined as a quantity that has magnitude as well as direction.

(i) 10 kg: It is a measure of mass. It is a scalar quantity as it has magnitude only and no direction.

(ii) 2 meters north-west: It is a measure of distance in a particular direction. It is a vector quantity as it has magnitude as well as direction.

(iii) 40°: It is a measure of angle. It is a scalar quantity as it has magnitude only and no direction.

(iv) 40 Watt: It is a measure of power. It is a scalar quantity as it has magnitude only and no direction.

(v) 10-19 coulomb: It is a measure of electric charge. It is a scalar quantity as it has magnitude only and no direction.

(vi) 20 m/sec2: It is a measure of acceleration. It is a vector quantity as it is a measure of rate of change of velocity.

2

1
2
3
4
5