A car accelerates from rest at 2 m/s2. What is its speed 3 s after the car starts moving?
A) 2 m/s
B) 3 m/s
C) 4 m/s
D) 6 m/s
E) none of the above
D
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Which of the following correctly describes how bottled water and water in public drinking systems are purified?
A) They are usually both purified using chlorine. B) They are usually both purified using ozone. C) Bottled water is usually purified using chlorine, but public drinking systems are usually purified using ozone. D) Bottled water is usually purified using ozone, but public drinking systems are usually purified using chlorine.
On equinox,
A) points north of the Arctic Circle receive 24 hours of daylight B) tilt is neither inclined toward or away from the sun C) points south of the Antarctic receive 24 hours of daylight D) points north of the Arctic Circle and Antarctic Circle receive 24 hours of darkness
Wind velocities are greater than water velocities, and therefore, wind can carry more sediment than water
Indicate whether the statement is true or false
In general, centrally planned economies are run to promote the
A) interests of society, while free-market economies depend on the self-interests of individuals. B) prosperity of all countries, while free-market economies promote the particular interests of a society. C) self-interests of individuals, while free-market economies promote the interests of governments. D) health of the environment, while free-market economies sacrifice sustainability.