A block with a mass (m) of .31kg is set against a spring with a spring constant of k1 = 604 n/m which has been compressed a distance of .1m. some distance in front of it along the frictionless surface is another spring with a spring constant of k2 = 195 N/m. The block is not conected to the first spring and can slide freely.  1) how far d2 will the second spring compress when the block runs into it? 2) how fast v will the block be moving when it striked the second spring. 3) now assume friction is present on the surface in between the ends of the springs at their equilibrium lenght and the coeeficent of kinetic friction is .5. if the distance between the spring is x=1m how far d2 will the second spring cmpress?

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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.