Grade 9 Test on Mechanics 20241217 (id: 808b0748b)

[单选题]
A net force F acts on a masya09/biaj v 2es m and produces d3p;pv fo12ysan acceleration a. What acceleration results if a net force 21yfsdp 2o 3;vpF acts on mass 4m?

A. $a/2$
B. $8 \; a$
C. $4 \; a$
D. $2 \; a$


参考答案:  D


本题详细解析: 暂无

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