The line between day and night on a planet or moon is called the terminator. How fast does the terminator of Earth’s moon move across its surface at the equator? The radius of the moon is 1.74 \times 10^{6} \mathrm{~m}.
Answer Choices
A. 0 \mathrm{~m} / \mathrm{s}
B. 4.5 \mathrm{~m} / \mathrm{s} \leftarrow CORRECT
C. 83 \mathrm{~m} / \mathrm{s}
D. 465 \mathrm{~m} / \mathrm{s}
E. 2201 \mathrm{~m} / \mathrm{s}