If a 20-kg object dropped in air has a terminal speed of 60 m/s, what was its acceleration at 30 m/s? A) 9.80 m/s² B) 7.35 m/s² C) 4.90 m/s² D) 2.45 m/s² E) More information is needed to answer this question.

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Quizplus · Accepted Answer

At terminal speed, the net force is zero, so drag force equals gravitational force. At 30 m/s, drag force is less, so net force is less than gravitational force, resulting in an acceleration less than 9.8 m/s².

If a 20-Kg Object Dropped in Air Has a Terminal