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17 Questions around this concept.
Calculate the path length of a semicircular path having a radius
Position vector
The location of a point, in space, is an important physical quantity that is also known as a position vector.
Representation of position vector
Its magnitude is the distance between the initial point (tail) and the final point (head).
(Generally, we take the initial point as the origin)
Its direction is from the initial point and the final point.
Magnitude of
Distance or Path length
Length of actual path between the initial and final positions of the body.
E.g. Distance traveled along a circle for one complete rotation is
Tips of distance
Distance is a scalar quantity.
It is always positive.
S.I. Unit
Dimension
Distance depends on the path followed by body.
Displacement
The shortest path is between the initial and final position.
Tips for Displacement.
Displacement is a vector quantity.
It can be positive, zero or negative.
Displacement is independent of the path.
4. S.I. unit
Dimension (L)
Displacement
- E.g. For Semi circle
Distance
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