(a) If the height of a playground slide is kept constant,will the length of the slide or whether it has bumps makeany difference in the final speed of children playing on it?Assume that the slide is slick enough to be considered frictionless.(b) Repeat part (a), assuming that the slide is notfrictionless.

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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.