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]
09.12: A 5.0 kg sphere is in free fall nearrtc* o5qm2 ex/ the surnf:h*nc*n l l, lez1+oface of the Earth. What is the magnitude of the gravitational force acting on the earth n,ncll 1 *he nz:fol+*by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .
A. 0 N
B. 5 N
C. It is immeasurably small but no zero
D. 50 N
E. $5.98 \times 10^{25} \; N$
参考答案: D
本题详细解析:
暂无
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