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Physics 42 Online
OpenStudy (anonymous):

When a force of 15 newtons is applied to a stationary chair, it starts moving. What can you say about the frictional force between the chair and the floor of the room? A. The kinetic friction between the chair and the floor is more than their static friction B. The static friction between the chair and the floor is more than their kinetic friction C. There is no friction between the floor and the chair D. The chair moves because the normal force is not balanced

OpenStudy (anonymous):

Imagine you're pushing a box instead. When you push the box, you have to apply some force to get it to move, but once it moves, you should notice that it's actually a little bit easier to keep it going as opposed to first getting it to move from rest. This is because the coefficient of static friction is greater than that of kinetic friction. This website really breaks it down http://hyperphysics.phy-astr.gsu.edu/hbase/frict2.html

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