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25 Cards in this Set

  • Front
  • Back
Force per unit
Force of attraction between two objects caused by their mass
Liquids and gases
Force acting between two surfaces touching each other
Force caused by gravity
Inertia measures this
Force that causes an object to float
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 =
Friction due to air
Air resistance
The elliptical path one body follows around another due to gravity
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 =
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
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