question: A force that opposes motion is used for stopping vehicles by what?
choices.text: wind brakes weight spinning shaking trucks fishtailing rolling
choices.label: A B C D E F G H
fact2: Friction is a Force that opposes motion.
combinedfact: A force that opposes motion is used for stopping vehicles by brakes.
formatted_question: A force that opposes motion is used for stopping vehicles by what? (A) wind (B) brakes (C) weight (D) spinning (E) shaking (F) trucks (G) fishtailing (H) rolling