本题目来源于试卷: Physics Unit6: Work and Energy，类别为 通用国际物理
[单选题]
A ball falls from the top off;;;r/ 8w5h iok+efhyp+by qw a ( yh6(x s 2,mo06lvjj3oriangbuilding, through the air (air friction is present), to the ground below. How does the kinetic energy (K) just before striking the ground compare to the potential036 j,(y x(grjoovh2a li6mns energy (U) at the top of the building?
A. K is equal to U.
B. K is greater than U.
C. K is less than U.
D. It is impossible to tell.
参考答案: C
本题详细解析:
暂无
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