1. Consider a rectangle of sides A, B, C and D. A girl is moving from the point A to B, B to C, C to D and D to A. Calculate the displacement?
Here the girl starts from A and finally she reaches the same point. The initial and final points are same in this case. So, the displacement of the girl is zero
. Whereas the distance he travels is same as the perimeter of the rectangle.
2. A girl walks from a point A to B and then C of a triangle shaped path given in the figure. Find out the displacement of the girl?
We know that displacement is the shortest distance between two points. Since the shape of the path is triangle, the shortest distance is the hypotenuse. According to Pythagoras theorem,
Where a and b are two sides of a triangle
c is the hypotenuse
So, the displacement is given by,
3. Calculate the displacement of a moving object in a given figure?
Displacement= Final point - Initial pointD=10-2=8 units