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### 25 Cards in this Set

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 Force per unit Pressure Force of attraction between two objects caused by their mass Gravity Liquids and gases Fluids Force acting between two surfaces touching each other Friction Force caused by gravity Weight Inertia measures this Mass Force that causes an object to float Buoyant Increase in speed of a fluid decreases the pressure of the fluid Bernolli’s principle When air resistance and gravity are balanced Terminal velocity Mass / Volume = Density Friction due to air Air resistance The elliptical path one body follows around another due to gravity Orbit When an outside pressure is applied to any point in a container, that pressure is transmitted throughout the fluid with equal strength Pascal’s principle Length x Width x Height = Volume What is the density of a plastic block with a height of 4cm, length of 2cm, and a width of 1cm, and a mass of 16 grams? 2 Pa A book weighing 10N covers an area of 1 square meter, what is the pressure of the book? 10 Pa An object weighing 20 N is immersed in water, it displaces water that weighs 5N, while in the water, the object weighs? 15 N Where would you generally find the greatest air pressure on the earth? Sea level The strength of gravitational force between two objects depends on the objects? Mass and distance between them Dropping a shot put and softball from the same height, which would land first? Both would fall at the same rate of speed, 9.8 m/s/s Air pressure increases with? Increased speed and surface area F=MG Force = Mass x gravity According to Pascal’s principle, when you apply pressure to a fluid in a container, the additional pressure Is transmitted throughout with equal strength What does dropping things in a vacuum eliminate? Air resistance Why are hydraulics of benefit? Allows one to use greater forces with less effort