effects of friction on objects
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effects of friction on objects
effect of friction on objects in motion
effect of friction on a moving object
3 effects of friction between moving objects
what are the effects of friction
how friction affects movement of objects
how does friction affect motion of objects
negative effects of friction
desirable effects of friction
how does friction affect moving objects
what affects the amount of friction
harmful effects of friction
what does friction do to a object
unwanted effects of friction
what does friction do to moving objects
how does friction affect an object's motion
things that affect friction
what are two things affected by friction
how friction affects motion
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