what affects the amount of friction
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what affects the amount of friction
factors that affect the amount of friction
what changes the amount of friction
what are the factors affecting the friction
what are the factors that affect friction
what happens when friction increases
what happens if you increase friction
what is a result of friction
factors affecting the size of friction
desirable effects of friction
negative effects of friction
effects of friction on objects
what are two things affected by friction
mention the factors that affect friction
things that affect friction
what affects the amount of friction, factors that affect the amount of friction, what changes the amount of friction, what are the factors affecting the friction, what are the factors that affect friction, what happens when friction increases, what happens if you increase friction, what is a result of friction, factors affecting the size of friction, desirable effects of friction, negative effects of friction, effects of friction on objects, what are two things affected by friction, mention the factors that affect friction, things that affect friction