friction. warm up come in quietly, get your journal from the appropriate bin, complete the following...
TRANSCRIPT
Warm up• Come in quietly, get your journal from the
appropriate bin, complete the following on the next available page:
• Draw the force diagram of Susie pushing her bike to the left with 400 N of force, and Roger pushing his bike to the right with 800 N of force. (Remember arrow size and direction)
• Draw the force diagram of a falling bowling ball weighing 20 N (Remember gravity is a force).
Standards
• S8P3b. Demonstrate the effect of balanced and unbalanced forces on an object in terms of gravity, inertia, and friction.
Daily Goals
• Explain how friction works• Give examples of the two types of friction• Explain how friction can be helpful and
harmful
Important
• Test Friday, Nov. 18• Practice Sheet #12 due Friday, Nov. 18• Study Guide due Friday, Nov. 18 for extra
credit
Types of Friction
• Two main types of friction– Static friction – occurs when a force is applied to
an object but does not cause motion– Kinetic friction – Friction between moving surfaces
Warm Up
• Come in quietly, get your journals, and have a seat.
• Open your journals and complete the writing prompt “A World without Friction”
• You have ten minutes to be finished. (Not just starting, but completely finished. Finished means several complete sentences addressing the prompt). For a grade.