1. When you come in..
Get Item 31: “Science Friction” from the front of the classroom and glue it in your notebook. Copy the following definitions on your handout: Static Friction (no motion) – the force of friction between surfaces not in motion. Sliding Friction (sliding motion) – AKA kinetic friction; the force of friction that affects surfaces in motion. Less powerful than static friction. Rolling Friction – the friction between surfaces when an object rolls freely over a surface (like a rolling bookbag). Weaker than sliding friction. Fluid Friction – force that resists movement of solid object in a liquid or gas (sky diver, swimmer) – air resistance

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riction