Physics unit 1

acceleration

The rate of change of velocity with respect to time.

direction

The orientation or path along which a quantity is measured, which depends on the choice of reference frame.

displacement

A vector quantity representing the change in position of an object from its initial to final location.

distance

A scalar quantity representing the total length of the path traveled by an object.

magnitude

The size or amount of a measured quantity, which can vary depending on the observer's reference frame.

one-dimensional coordinate system

A reference system used to describe positions and directions along a single axis, typically represented as a number line.

opposite directions

Directions that are 180 degrees apart on a coordinate system, represented by opposite signs in one-dimensional calculations.

position

A vector quantity describing the location of an object relative to a reference point.

scalar

A physical quantity that has magnitude only, without direction.

speed

A scalar quantity representing the rate at which an object covers distance.

vector

A quantity that has both magnitude and direction, which can be represented as the sum of perpendicular components.

vector component

The projection of a vector along a specific axis or direction, which in one dimension is indicated by the sign of the value.

vector sum

The result of adding two or more vectors together, taking into account both magnitude and direction.

velocity

A vector quantity that describes both the speed and direction of an object's motion.