Two marbles roll off a table top that is 2 meters high. The marbles roll off the table at the same time, but with different speeds. The red marble has a speed of 3 m/s, while the blue marble has a speed of 6 m/s. Which is true? A.The blue marble will strike the ground in less time than the red marble. B.The red marble will strike the ground in less time than the blue marble. C.It is impossible to determine the time the marbles will take to reach the ground unless their mass is known .D.The red and blue marbles will strike the ground at the same time.

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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.