本题目来源于试卷: Newton’s law of motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
00.25: The net force on a rocket with vy 5szx, (t z:rw6go1h.q*yjsti: 7c ya weight of 15000 newtons is 24000 new s0 scevb1s j:ru-lu kdple- 86xj:8(itons. About how much time is needed to increase the rocket ’ speed from 1lx bu 8kje8e6su:pcs-j-i0d v ls(r :12 m/s to 36 m/s near the surface of the Earth at takeoff?
A. 62 seconds
B. 678seconds
C. 1.5 seconds
D. 3.8 seconds
E. 15 seconds
参考答案: C
本题详细解析:
暂无
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