Question

Chen is testing the friction of three surfaces. he pushes the same ball across three different surfaces with the same force and measures the distance the ball rolls over each surfacel. the ball moved ten inches across surface 1, six inches across surface 2, and fifteen inches across surface 3. which could most likely describe the three surfaces? surface 1 is ice, surface 2 is gravel, and surface 3 is blacktop. surface 1 is gravel, surface 2 is ice, and surface 3 is blacktop. surface 1 is blacktop, surface 2 is gravel, and surface 3 is ice. surface 1 is blacktop, surface 2 is ice, and surface 3 is gravel.

Answer 1

Surface 1 is blacktop, Surface 2 is gravel, and Surface 3 is ice. is most likely describe the three surfaces.

What is friction?

Friction, force that resists the sliding or rolling of one solid object over another. Frictional forces, such as the traction needed to walk without slipping, may be beneficial, but they also present a great measure of opposition to motion. About 20 percent of the engine power of automobiles is consumed in overcoming frictional forces in the moving parts.

The major cause of friction between metals appears to be the forces of attraction, known as adhesion, between the contact regions of the surfaces, which are always microscopically irregular. Friction arises from shearing these “welded” junctions and from the action of the irregularities of the harder surface plowing across the softer surface.

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