Static friction is caused by molecular _____ and kinetic friction is caused by molecular _____. Responses attraction; bonds attraction; bonds attraction; repulsion attraction; repulsion bonds; attraction bonds; attraction None of the above None of the above
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5. Static friction is caused by molecular ____ and kinetic friction is caused by molecular ____. attraction; bonds attraction; repulsion bonds; attraction None of the above
Sri K.
To push pieces of heavy furniture across the carpet typically requires more force than moving them on a hard, smooth surface. This is because the kinetic coefficient of friction is larger than the static coefficient of friction. According to Newton's 2nd Law, the static coefficient of friction is larger than the kinetic coefficient. According to Newton's 1st Law, frictional forces act parallel to the surface. The force of static friction between two surfaces is parallel to the surface of contact and opposes the relative motion. Question 8 (3 points): Frictional forces act parallel to the surface. True False Question 9 (3 points): The force of static friction between two surfaces is parallel to the surface of contact and in the direction that opposes the relative motion. True False
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