Motion In A Plane

Scalar quantities: These are the physical quantities that are not affected by the change in the coordinate systems used to define them. They do not have any direction. Example: Speed, charge, temperature, etc.

Vector quantities: These are physical quantities that have both direction and magnitude. They change with change in the coordinate systems used to define them. Example: Displacement, velocity, etc.
 Position vector: Position vector of a point in a coordinate system is the straight line that joins the origin and the point.

Displacement Vector: It is the straight line that joins the initial and the final position.

Equality of Vectors: Two vectors are said to be equal only if they have the same magnitude and the same direction.

Negative vector: Negative vector is a vector whose magnitude is the same as that of a given vector, but whose direction is opposite to that of the given vector.

Zero vector: Zero vector is a vector whose magnitude is zero and have an arbitrary directâ€¦
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