Multiple Choice
Which of these four questions arising from modern ideas of force and matter is one of the great unanswered questions of contemporary science?
A) Why do planets move in elliptical orbits?
B) Why are the inertial mass (defined in Newton's second law) and the mass used in his law of gravitation identical?
C) What is force?
D) Why is Mercury's orbit measurably different from that predicted by Newton's laws?
Correct Answer:
Verified
Correct Answer:
Verified
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