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

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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