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        本题目来源于试卷:  Physics Unit4: Force Dynamics & Newton's Laws ,类别为 通用国际物理 
[单选题]A horizontal force agm.06(v rf6oyt/f, yp - nbalhccelerates a box from rest acrof +.+ gilfzpj3ss a horizontal surface (friction is present) at a constant rate.  The experiment is repeated, and all conditions remain the same with the exception that the horizontal force is doublep+ fi +3.fjlzgd.  What happens to the box's acceleration?
 
 
 
A. It increases to more than double its original value. B. It increases to exactly double its original value.
 C. It increases to less than double its original value.
 D. It increases somewhat.
 
 
 参考答案:  A
 
 
 本题详细解析:
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