Which of the following statements is correct about friction?Group of answer choicesFriction always acts on stationary objectsFriction always acts in the same direction to the direction of motion of an objectFriction is measured in kilogramsFriction always acts in the opposite direction to the direction of motion of an object
Question
Which of the following statements is correct about friction?Group of answer choicesFriction always acts on stationary objectsFriction always acts in the same direction to the direction of motion of an objectFriction is measured in kilogramsFriction always acts in the opposite direction to the direction of motion of an object
Solution
The correct statement about friction is: "Friction always acts in the opposite direction to the direction of motion of an object".
Here's why:
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Friction does not always act on stationary objects. It acts when there is an attempt to move the object, but it's not always present.
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Friction does not always act in the same direction to the direction of motion of an object. It actually acts in the opposite direction to resist the motion.
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Friction is not measured in kilograms. It is measured in Newtons, which is the SI unit for force.
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Friction always acts in the opposite direction to the direction of motion of an object. This is true because friction is a force that resists motion, and therefore it acts in the opposite direction of the motion.
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Which of the following statements about friction is TRUE?A. Friction opposes motion of objects.B. Friction occurs between non-rubbing surfaces.C. Friction causes moving objects to move faster.D. Friction acts in a direction similar to the direction of an object’s motion.2. Will it be easier for a person to push a table on a carpeted floorthan on tiled floor?A. No, because the carpeted floor is rough, so friction is lesser.B. No, because the carpeted floor is rough, so friction is greater.C. Yes, because the carpeted floor is smooth, so friction is lesser.D. Yes, because the carpeted floor is smooth, so friction is greater.3. When can we say that friction on a floor is greater?A. If the floor is wet.B. If the floor is tiled.C. If the floor is rough.D. If the floor is smooth.4. Which force causes a rolling ball to stop after a few seconds?A. frictionB. gravityC. magneticD. motion5. Why is difficult to move heavy objects on a rough surface?A. rough surface is slipperyB. there is no friction on a rough surfaceC. there is lesser friction on a rough surfaceD. there is greater friction on a rough surface6. When you are travelling along a road, how does the wet road affect friction?A. It increases friction.B. It decreases friction.C. It maintains friction.D. It increases and decreases friction.What I Know
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