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- Multiple ChoicePlease save your changes before editing any questions.Friction is a force that acts in an ___________ direction of movement.similaroppositeparallelwest
- Multiple ChoicePlease save your changes before editing any questions.The amount of friction depends on the weight of the objects pressing together.TrueFalse
- Multiple ChoicePlease save your changes before editing any questions.
What type of friction is not moving?staticslidingfluidrolling - Multiple ChoicePlease save your changes before editing any questions.How can friction be reduced?reduce the force acting between the 2 surfacesreduce the roughness of the 2 surfaces coming in contactuse wax, grease or oilall of the above are ways of reducing friction
- Multiple ChoicePlease save your changes before editing any questions.A type of friction that occurs when air pushes against a moving object causing it to decelerate.surface areaair resistancevelocitygravity
- Multiple ChoicePlease save your changes before editing any questions.Which of the following is an example of friction that is helpful?Brakes used on a bikeTires from a car on the roadTread on the bottom of your shoesAll are examples that are helpful
- Multiple ChoicePlease save your changes before editing any questions.Which of the following is an example of friction that is harmful?Pencil marking on paperEngine parts wearing outsand placed on ice in the winterUsing an eraser to erase marks
- Multiple ChoicePlease save your changes before editing any questions.How would the absence of friction affect a marble traveling on a long, straight path?The marble’s speed would decrease.The marble’s speed would increase.The marble would stop immediately.The marble would remain at constant speed.
- Multiple ChoicePlease save your changes before editing any questions.When two surfaces rub, the irregularities of one surface get caught on those of the other surface?TrueFalse
- Multiple ChoicePlease save your changes before editing any questions.Rougher surfaces have ...greater frictionless frictionthe same level of friction