In principle, a first-grader could measurably move the Earth if
A) she pushed her hardest on the Earth.
B) she had a long enough lever.
C) she ran her fastest opposite the spin of the Earth.
D) she was at the North Pole and had a bicycle wheel spinning opposite the spin of Earth.

Question

Quizplus · Accepted Answer

This is the only option that takes advantage of mechanical advantage. By using a lever, even a small force can have a significant effect on a much larger object, such as the Earth. The other options do not provide such mechanical advantage and would not result in a measurable movement of the Earth.

In Principle, a First-Grader Could Measurably Move the Earth If