In which scenario would friction be considered helpful rather than a hindrance?a) Slowing down a car on a slippery roadb) Sliding down a playground slidec) Walking on a rough surface without slippingd) None of the above

In which of these scenarios is friction considered favourable?When cars are parked on a slopeWhen a sliding door is difficult to slide openWhen a driver uses the brakes to stop a truckWhen it causes wear and tear in machine parts

Which of the following situations involve friction that can be both favourable and unfavourable?Removing grip on footwearUsing lubricants in an engineIncreasing surface area on car tyresCycling in different weather conditions

A large coefficient of sliding friction would have a negative effect on performance in which of the following examples?Question 10Select one:a.between the floor and the base of a sled that an operator wishes to continue pushing down a rampb.between the blade of the boot of an ice skater who wishes to begin spinning smoothly across the ice rinkc.between the sole of the shoe of a ballroom dancer who wishes to begin turning smoothly across the dance floord.a large coefficient of sliding friction would be equally negative to performance in each of the situationse.a large coefficient of sliding friction would not influence performance in any of the situations

Depending on the situation, friction can be a help or a nuisance. Identify in which of these situations friction is considered helpful.

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