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Ch4 AP phys.science
ch.4 study guide for Stubbs 11/6/15
Term | Definition |
---|---|
pressure | the amount of force per unit area applied to an object's surface |
atmospheric pressure | the ratio of the weight of all the air above you to your surface area |
buoyant force | an upward force applied by a fluid on an object in the fluid |
Archimedes' Principle | states that the weight of the fluid that an object displaces is equal to the buoyant force acting on the object |
Pascal's Priciple | states that when pressure is applied to a fluid in a closed container, the pressure increases by the same amount everywhere in the container |
Bernoulli"s Principle | states that the pressure of a fluid decreases when the speed of that fluid increases |
drag force | a force that opposes the motion of an object through a fluid |
fluid | any substance that can flow and take the shape of the container that holds it |