A skydiver steps from a helicopter and falls for 5 s before reaching her terminal velocity. During this 5-s interval, her acceleration

A) is constant.
B) increases.
C) decreases.
D) is zero.
E) none of the above


C

Environmental & Atmospheric Sciences

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Which statement is most consistent with the scientific method?

A) Hypotheses cannot be revised after they are proposed. B) Hypotheses are tested through observations and controlled experiments. C) Scientific laws always arise fully formed and in correlating groups. D) Theories cannot be modified after they are tested.

Environmental & Atmospheric Sciences

The Moors brought their _____ faith and civilization to the Iberian Peninsula

a. Jewish b. Protestant c. Catholic d. Eastern Orthodox e. Islam

Environmental & Atmospheric Sciences

Wind erosion is most likely to cause problems inĀ 

A. Open, arid regions B. Forested grazing lands on high mountains C. Protected, arid regions D. Agricultural regions in the far north E. Fertile river bottoms with annual floods

Environmental & Atmospheric Sciences

At sunset in the middle latitudes, look for a rainbow toward the ____

A) north B) south C) east D) west

Environmental & Atmospheric Sciences