1. What is friction?, A force that pushes objects forward, A force that opposes motion between surfaces, Which type of friction occurs when an object rolls over a surface?, Sliding friction, Rolling friction, Why is rolling friction weaker than sliding friction?, Rolling objects have less surface area touching the ground, Rolling friction doesn’t exist, Which of these is an example of rolling friction?, A hockey puck gliding on ice, A car tire moving on the road, Which of these is an example of sliding friction?, A person pushing a book across a table, A train wheel moving on a track, What happens when sliding friction is reduced?, Objects move more easily, Friction increases, Why do cars use wheels instead of sliding plates?, Wheels reduce friction, making movement easier, Wheels create more resistance, Which factor increases rolling friction?, A rougher surface, A smoother surface, What happens if you increase the weight of an object on a rolling surface?, The object will stop moving, Rolling friction increases, How can you reduce sliding friction?, ) Add lubrication (like oil or grease), Increase the weight of the object.
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Friction
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