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2 cards from this section. Quick, good the night before a test.
Fill in the blank: Friction opposes the __________ between the surfaces in contact.
Think about what does friction do to two sliding objects.
What is static friction?
Remember it keeps things from moving.
What does friction do?
Think about what happens when you slide an object.
True or False: Static friction is greater than sliding friction.
Consider what it takes to start moving a heavy box.
If a box is sliding down an inclined plane, but then sand is spread on the plane, what happens to the motion of the box?
Consider what effect the rougher surface will have on the box's movement.
Design a sports shoe for a basketball player considering the type of friction needed. What features would your design include?
Think about what helps athletes to make quick stops and direction changes.
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