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 wijp4 n w3fcm--/anljd0/v8wy vth a weight of 15000 /yr0ckkmcvu s:ljlj.+l lk n pb*;61 ,newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near m/: 6 y0lsuljk,+1p cl*jr; lb.k cvnkthe 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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