Distance or Path length
Length of the actual path between the initial and final positions of the body.
E.g. Distance traveled along the circle for one complete rotation is
Tips of distance
Distance is a scalar quantity.
It is always positive.
S.I. Unit meter (m).
Dimension
Distance is depending on the path followed by the body .
Displacement
Shortest path in between the initial and final positions.
Tips for Displacement.
Displacement is a vector quantity.
It can be positive, zero, and negative.
Displacement is independent of path.
S.I. unit Meter (m)
Dimension (L)
Displacement Distance.
E.g. For Semi circle
while