Question

define scalar and vector quantities

Answer 1

the quantity is said to be scalar if it has only magnitude but no direction.
the quantity is said to be vector if it has both magnitude and direction.

Answer 2

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Here is your answer

➡️ Scalar Quantity= A physical quantity that is completely described by its magnitude is called scalar quantity.

➡️ Vector Quantity= A physical quantity which is completely described by its magnitude as well as its direction is called vector quantity.

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