A horizontal spring, of k = 13.3 N/m, is mounted at the edge of a lab benchto shoot marbles at targets on the floor 93.5 cm below. A marble of mass 8.41 grams is shot from the spring, which is initially compressed a distance of 4.17 cm. How far does the marble travel horizontally (in cm) before hitting the floor?

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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.