NCERT Exercise 3.4 - Motion in a Plane
Question: State with reasons, whether the following algebraic operations with scalar and vector physical quantities are meaningful: (a) adding any two scalars (b) adding a scalar to a vector (c) multiplying any vector by any scalar (d) multiplying any two scalars or two vectors (e) adding any two vectors (f) adding a component of a vector to the same vector.
Answer: (a) yes, (b) no, (c) yes, (d) yes, (e) only if same dimensions, (f) yes.
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