Question

what is scalar quantity and vector quantities

Answer 1

Scalar quantity -these are the physical quantities which are expressed ONLY by their magnitude.Examples :mass, length distance etc
Vecťoř quantity -these are the physical quantities which require MAGNITUDE as well as the direction to express them. example :velocity, displacement, weight.

Answer 2

Answer:

What is Physical Quantities?

• Physical quantities are those quantities which can be measured.

There are two types of physical quantities:

1). Scalar Quantities: A quantity said to be scalar it have only magnitude. Ex - distance, mass, length and time.

2). Vector Quantities: Those quantity which have both magnitude and direction and also follow the triangle rule of vector addition. Ex - velocity, acceleration and displacement.

Types of vector:

• Unit vector: A vector is said to be unit vector if there magnitude is unit and has the same direction as that of the given vectors.

• Equal vector: Two vectors are said to be equal if they have equal magnitude & same direction.

• Negative vector: Two vectors are said to be negative if they have magnitude but opposite in direction.

• Co-initial vector: Two vector are said to be co-initial if their initial point is common.

• Co-linear vector: These are those vectors which are having equal or unequal magnitude are acting along the parallel straight line.