The trajectory of a projectile that accelerates in only the vertical direction while moving at a constant horizontal velocity is called a

A. parabola.
B. circle.
C. both of these
D. none of the above


Answer: A

Environmental & Atmospheric Sciences

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When measuring the lines of latitude, always begin with the ______, which represents 0 degrees.

Fill in the blank(s) with the appropriate word(s).

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________ have the most dynamic and changeable day-to-day weather on Earth

A) Tropical latitudes B) Latitudes affected by fronts C) Polar latitudes D) Latitudes affected by hurricanes E) Air mass source regions

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An interdependent group of items interacting in a regular way to form a unified whole is a

A) system. B) network. C) toponym. D) hearth.

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