本题目来源于试卷: Motion with air resistance，类别为 美国物理杯赛(Physics Bowl)
[单选题]
05.08: Why do raindrops1 f;c swi:7y0aa;p21y 5l ij8lau eior fall withnsdarn;r,e5w + k a2 ;v+aqe(a constant speed during the later stages of their desc+r +aaken a(a2s;wn5; reqv,d ent?
A. The gravitational force is the same for all drops.
B. All drops fall from the same height.
C. The gravitational force is negligible for objects as small as raindrops.
D. The gravitational force cannot increase the speed of a falling object to more than 9.8 m/s.
E. Air resistance balances the gravitational force on a drop.
参考答案: E
本题详细解析:
暂无
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