SAT Subject Physics Practice Question 354: Answer and Explanation
50. Which of the following statements is/are correct about an object that has no unbalanced forces applied to it?
I. The object has no velocity.
II. The object has no acceleration.
III. The object does not move.
A. I only
B. II only
C. I and III only
D. II and III only
E. I, II, and III
Correct Answer: B
The correct answer is (B). If there is no unbalanced force applied to an object, the object is not accelerated. An unbalanced force always causes acceleration of the object to which it is applied.