It is a force that acts on a body moving in a circular path and is directed towards the centre around which the body is moving is called as Centripetal force.
Kritika walks 40 metres towards south. Then turning to her right she rides 30 metres. Then, turning to her left, she rides 50 metres. Again, she turns toher left and rides 30 metres. How far (in metres) is she from her initial position?