| SAT II Physics Problem
Hey, I recently bought the Barron's Physics book for the SAT II and was taking the diagnostic test when I got up to this question. I was just dumbfounded; either I'm missing something or this book is illogical.
An object with a constant mass rests on a smooth and perfectly horizontal table. If a horizontal force F is applied, acceleration a results. If F is doubled without changing the direction, what will be the effect(s) on the acceleration?
I. The acceleration will remain the same.
II. The acceleration will be doubled.
III. The acceleration will decrease.
IV. The acceleration will increase but not double.
A) I, II, and III only.
B) I and III only
C) II and IV only
D) IV only
E) None of the above
How is the answer C? Is this not a complete contradiction? It is just worded poorly...does it really mean what could happen? | 
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