Flashcards › Science Vocabulary 2

force push or pull gravity force of attraction between all objects in the universe newton metric unit of force air resistance force that opposes the movement of an object in air terminal velocity speed at which air resistance and gravity acting on a falling object are equal vaccum empty space friction force that opposes the motion of an object lubricants substances that reduce friction fluid pressure pressure in gases and liquids pressure force per unit area barometer instrument used to measure air pressure manometer instrument used to measure pressure in a liquid Bernoulli's principle principle that states that as the speed of a fluid increases, its pressure decreases Chapter 2