1.1.1 Distance and Displacement

Linear Motion

Linear motion is the motion in 1 dimension (1-D) or the motion in a straight line.

Youtube Video


Distance

1. The distance traveled by an object is the total length that is traveled by that object.
2. Distance is a scalar quantity.
3. The SI unit of distance is m (metre).

Displacement

1. Displacement of an object from a point of reference, O is the shortest distance of the object from point O in a specific direction.
2. Displacement is a vector quantity.
3. The SI unit of displacement is m (metre).

Distance vs Displacement

Distance travelled = 200m
Displacement = 120 m, in the direction of Northeast

External Link
Electronic Science Tutor - Examples of Vector Quantities

Interactive Animation
Distance vs Displacement - Flash Animation
Distance vs Displacement - Java Applet