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Anonymous
ANSWERS: 3
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It's the fastest speed an object can achieve.
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An object reaches terminal velocity when the downward force of gravity equals the upward force of drag. The net force on the body is then zero, and the result is that the velocity of the object remains constant. . http://en.wikipedia.org/wiki/Terminal_velocity
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It's when the friction equals the gravitational/other forces pulling it down. For a free-falling body, mg = kv^2.
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