Why, according to Newtonian gravity, do objects move as described by Kepler’s Se
ID: 1484055 • Letter: W
Question
Why, according to Newtonian gravity, do objects move as described by Kepler’s Second Law (that objects move faster when closer to the Sun, and slower when farther from the Sun)?
As a planet gets closer to the Sun, its inertia causes it to speed up
When a planet is closest to the Sun, its mass increase, increasing the force it feels
As a planet falls closer to the Sun, the force of attraction increases, speeding up the planet
When a planet is farthest from the Sun, the force is greatest, so it moves fastest
The distance between a planet and the Sun is always the same
2.
As the Earth revolves around the Sun, what affect is visible due to the relative speeds of the Earth’s motion and the light emitted by stars?
We see ALL the stars get brighter in the direction of motion of the Earth in its orbit
We see individual stars cycle through redshifts and blueshifts throughout the year
We see ALL the stars shifted in position in the sky in the direction of the Earth’s orbit
We see the apparent position of individual stars change throughout the year
We see individual stars get brighter throughout the year
3.
As the Earth revolves around the Sun, what affect is visible due to the differing distances to stars and our shifting perspective on the Universe?
We see individual stars cycle through redshifts and blueshifts throughout the year
We see ALL the stars get brighter in the direction of motion of the Earth in its orbit
We see ALL the stars shifted in apparent position in the sky in the direction of the Earth’s orbit
We see individual stars get brighter throughout the year
We see the apparent position of individual stars change throughout the year
As a planet gets closer to the Sun, its inertia causes it to speed up
When a planet is closest to the Sun, its mass increase, increasing the force it feels
As a planet falls closer to the Sun, the force of attraction increases, speeding up the planet
When a planet is farthest from the Sun, the force is greatest, so it moves fastest
The distance between a planet and the Sun is always the same
2.
As the Earth revolves around the Sun, what affect is visible due to the relative speeds of the Earth’s motion and the light emitted by stars?
We see ALL the stars get brighter in the direction of motion of the Earth in its orbit
We see individual stars cycle through redshifts and blueshifts throughout the year
We see ALL the stars shifted in position in the sky in the direction of the Earth’s orbit
We see the apparent position of individual stars change throughout the year
We see individual stars get brighter throughout the year
3.
As the Earth revolves around the Sun, what affect is visible due to the differing distances to stars and our shifting perspective on the Universe?
We see individual stars cycle through redshifts and blueshifts throughout the year
We see ALL the stars get brighter in the direction of motion of the Earth in its orbit
We see ALL the stars shifted in apparent position in the sky in the direction of the Earth’s orbit
We see individual stars get brighter throughout the year
We see the apparent position of individual stars change throughout the year
Explanation / Answer
(1)
third option is correct. force of attraction increases , and speed of speeding up the planet as planet coming near to the Sun.
(2)
second option is correct
(3)
first option is correct.
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