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Friction written on a blue background.
easy problem solving surreal concept
Man's fingers lighting a match, rubbing against the matchbox, setting fire to friction. On a black background. Matches and fire.
The Man in Black is clicking, press touch to activate. Newton's second law of motion F equal to ma consisting of zeta angle, mass, friction, acceleration, gravity, and axial force.
Set of deep groove ball and roller bearings on a gray background with soft focus. Axial chrome plated round bearings for heavy equipment and mechanical engineering close-up.

Free stock photosfriction (4)

Rural road mystery in asphalt and rubberImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/rural-road-mystery-asphalt-rubber-141223168">Image used under license from Freestock.com</a>
Tire tracks on cracked asphaltImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/tire-tracks-cracked-asphalt-32023282">Image used under license from Freestock.com</a>
Section of grooved floor beneath revolving doorImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/section-grooved-floor-revolving-door-3235191">Image used under license from Freestock.com</a>
Scraped hull of small old boat in saltwater harborImage used under license from Freestock.com<a href="https://www.freestock.com/free-photos/scraped-hull-small-old-boat-saltwater-3003187">Image used under license from Freestock.com</a>

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