What is Motion ?

Motion is the change in position of an object over time relative to a reference point.

Distance:
The total length of the path traveled by an object, regardless of direction. It is a scalar quantity (has only magnitude). Unit: meter (m).

Displacement:
The straight-line distance between the starting point and the ending point, measured in a specific direction. It is a vector quantity (has both magnitude and direction). Example: If you walk 5 km north and then 3 km south, your distance is 8 km but your displacement is 2 km north.

Speed:
The distance traveled per unit of time. It is a scalar quantity. Formula: Speed = Distance / Time. Unit: m/s or km/h.

Velocity:
The displacement per unit of time. It is a vector quantity because it includes direction. Formula: Velocity = Displacement / Time. Unit: m/s.

Acceleration:
The rate of change of velocity. An object accelerates when it speeds up, slows down, or changes direction. Formula: Acceleration = (Final Velocity − Initial Velocity) / Time. Unit: m/s².

Positive acceleration = speeding up
Negative acceleration (deceleration) = slowing down