AP Physics 1 Question 376: Answer and Explanation
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4. In which of the following position-versus-time graphs does the object in motion have a constant negative acceleration?
Correct Answer: D
The position-versus-time graphs depicted in (A) and (B) are linear, indicating constant velocity and zero acceleration. Eliminate (A) and (B). The position-versus-time graph in (C) has a negative velocity but has a positive acceleration. Eliminate (C). The position-versus-time graph in (D) has a negative velocity and a negative acceleration. Choice (D) is correct.