Define scalars and vectors.

1.	Define scalars and vectors.
Answer» 1. Physical quantities which can be completely described b their magnitude (a number and unit) are called scalars. 2. Physical quantities which need magnitude, as well as direction for their complete description, are called vectors.

Answer»

1. Physical quantities which can be completely described b their magnitude (a number and unit) are called scalars.

2. Physical quantities which need magnitude, as well as direction for their complete description, are called vectors.

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