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Published byVernon Clark Modified over 5 years ago

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**Study Guide Sliding, rolling, static and fluid friction.**

Lubricants and ball bearings A force that opposes the motion of an object. The weight of an object and the type of surface. Chemical to electrical to mechanical Chemical to electrical to light A series is lined up end to end and is a stronger connection, while parallel is side by side and is a weaker connection.

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**Study Guide Work = force x distance Power = Work time Speed = Distance**

Mass Mass- amount of matter in an object Weight-gravitational force

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Study Guide You would weigh less on the moon because there is less gravitational pull on the moon. Newtons Joules Watts Inertia-the tendency to resist change. Force- push or pull Horsepower-unit of power in the English system that is equal to 750 watts. Work-The product of a force and the distance through which it acts.

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Study Guide Energy –Ability to do work Power- The rate of doing work Balanced forces-Forces on an object that are equal in size and opposite in direction. No distance was made Unbalanced Forces- A net force of an object that always changes the movement (velocity) of an object.

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Study Guide Newton's 1st law of motion- An object at rest stays at rest and an object in motion stays in motion unless acted upon an unbalanced force. Newton’s 2nd law of motion- Acceleration is produced when a force acts on a mass. The greater the mass, the greater the amount of force needed on an object. Newton’s 3rd law of motion- For every action there is an equal and opposite reaction.

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Study guide 18. Work= Force * Distance- 16 N* 1.5 meters= 24 J 19.Work= F*D- 8,000 N*1,000 meters= 8,000,000 J 20. A. Work=F*D- 930,000 N*100 meters=93,000,000 J

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**Study Guide 23. Speed= Distance Traveled/Time of Travel**

123 meters/4.5 seconds= m/s 24. Kinetic is moving. Potential is stored. 25. 26.None Velocity is the speed at which an object is traveling in a single direction. Momentum= mass x velocity

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