Astronomers discover a new comet that orbits the Sun, but has its aphelion (the furthest point in its orbit) beyond Neptune. Astronomers studying this comet have the right to expect that it:
A) will follow Newton's laws of motion
B) will move ahead in a straight line at a steady speed because of the law of inertia
C) will not obey Newton's universal law of gravitation
D) will not have an equal and opposite force in empty space when the force of the Sun's gravity pulls on it
E) astronomer have no right to expect ANY of the above.

Question

Quizplus · Accepted Answer

The discovery of a new comet that orbits the Sun, but has its aphelion beyond Neptune, does not change the fact that all objects in space follow Newton's laws of motion. The comet will still obey these laws, including the universal law of gravitation, and experience an equal and opposite force when the force of the Sun's gravity pulls on it. Therefore, option A is the best choice. Option B is incorrect as the comet will not move in a straight line at a steady speed, as it will be influenced by the gravity of other planets in the Solar System. Option C is incorrect as the comet will still obey Newton’s universal law of gravitation. Option D is incorrect as the comet will still experience an equal and opposite force in empty space when the force of the Sun’s gravity pulls on it. Option E is incorrect as astronomers have the right to expect that the comet will follow basic laws of physics.

Astronomers Discover a New Comet That Orbits the Sun, but Has