1. The problem statement, all variables and given/known data Which of the following is true? a. None of these answers are correct. b. If a car is traveling eastward, its acceleration is eastward. c. A particle with constant acceleration can never stop and stay stopped. d. If a car is slowing down, its acceleration must be negative. 2. Relevant equations a = v/t 3. The attempt at a solution I'm not sure what the answer is. I'm thinking it's a, but I'm not really sure.