the child has a mass of 23.7kg.  The chains each have a length of 3.22m.  As the child swings, she moves along a path which is part of a vertical circle.When the child is at the lowest point of the swinging path, the chains exert a total upward force of 366N and the child's speed is ________m/s.Note: Speed is always a positive number.

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.