Ex 10.1, 2 Classify the following measures as scalars and vectors. (i) 10 kgScalar : A quantity which has only magnitude, eg : 10 km
Vector: A quantity which has a magnitude as well as a direction
eg : 10 km towards north
10 kg is weight, which has only magnitude.
So, 10 kg is a scalar
Ex 10.1, 2 Classify the following measures as scalars and vectors. (ii) 2 meters north-westScalar : A quantity which has only magnitude, eg : 10 km
Vector: A quantity which has a magnitude as well as a direction
eg : 10 km towards north
2 meters north-west has magnitude 2 meters as well as a direction north-west
So, 2 meters north west is a vector.
Ex 10.1, 2 Classify the following measures as scalars and vectors. (iii) 40° Scalar : A quantity which has only magnitude, eg : 10 km
Vector: A quantity which has a magnitude as well as a direction
eg : 10 km towards north
40° has only magnitude
So, 40° is a scalar
Ex 10.1, 2 Classify the following measures as scalars and vectors. (iv) 40 wattScalar : A quantity which has only magnitude, eg : 10 km
Vector: A quantity which has a magnitude as well as a direction
eg : 10 km towards north
40 watts, is a power which has a magnitude only
So, 40 watts is a scalar
Ex 10.1, 2 Classify the following measures as scalars and vectors. (v) 10−19 CoulombScalar : A quantity which has only magnitude, eg : 10 km
Vector: A quantity which has a magnitude as well as a direction
eg : 10 km towards north
10-19 coulomb is a electric charge, which has a magnitude but no direction
So, it is a scalar
Ex 10.1, 2 Classify the following measures as scalars and vectors. (vi) 20 m/s2Scalar : A quantity which has only magnitude, eg : 10 km
Vector: A quantity which has a magnitude as well as a direction
eg : 10 km towards north
20 m/s2 is acceleration. It has magnitude as well as direction.
So, acceleration is a vector

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.