本题目来源于试卷: Work Energy and Power，类别为 美国物理杯赛(Physics Bowl)
[单选题]
02.32: An automobile engin c*z18 e(siz*lulka*pe delivers 24,000 watts (about 32 5n7/fmzi l) jjspm )ev/ dbi//horsepower) of power to a car's driving wheels. If the car lem/v/s/mzjb p/fii 75j))n d maintains a constant speed of 30 m/s (about 65 mph), what is the magnitude of the retarding force acting on the car?
A. 800N
B. 960N
C. 1950N
D. 720000N
E. 72000N
参考答案: A
本题详细解析:
暂无
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