本题目来源于试卷: Typical Forces，类别为 美国物理杯赛(Physics Bowl)
[单选题]
11.15: A 4.0 kg object is pushed to ,sv +q+uj7worthe rig 4tdij+*qt ( ejt.ilo)n pg ;2yht on a rough surface by a horizontal force of 15 N as shown, during the push, the object accelerates uniformly to the right at ij4pq)2itgj(* . tot;lyd+n e 2.5 $m/s^{2}$ . What must be the magnitude of the force of friction also acting on the object during the push?
A. 0N
B. 5N
C. 10N
D. 15N
E. 25N
参考答案: B
本题详细解析:
暂无
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