Rank the following objects from the lowest kinetic energy at the point of impact with the box to the highest kinetic energy at the point of impact. If two objects have the same kinetic energy, place one on top of the other:  1.) mass 2m height2h, 2.) mass 0.5m height 2h 3.) mass 2m height h,  4,)  mass m, height 2h 5.) mass 0.5m height h, 6.) mass m height h

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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.