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Unreasonable Results (a) What is the final velocity of a car originally traveling at 50.0 km/h that decelerates at a rate of $0.400 \textrm{ m/s}^2$ for 50.0 s? (b) What is unreasonable about the result? (c) Which premise is unreasonable, or which premises are inconsistent?
Question by OpenStax is licensed under CC BY 4.0.
Final Answer
  1. $-.6.11 \textrm{ m/s}$
  2. The final velocity is backwards. This might be possible if the car was stopped and reversed using the transmission and clutch.
  3. The duration is longer than necessary to stop.
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OpenStax College Physics Solution, Chapter 4, Problem 50 (Problems & Exercises) (2:12)

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