AP Physics 1 Question 10: Answer and Explanation

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Question: 10


The figure above shows two positively charged particles. The +Q charge is fixed in position, and the +Q charge is brought close to +Q and released from rest. Which of the following graphs best depicts the acceleration of the +Q charge as a function of its distance R from +Q ?

  • A.
  • B.
  • C.
  • D.

Correct Answer: A


A If the mass of the +q charge is m, then its acceleration is

The graph in (A) best depicts an inverse-square relationship between a and r.