ASTR 111 Lecture Notes - Lecture 3: Elliptic Orbit, Ellipse, Nicolaus Copernicus
31 Oct 2016
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ASTR 111 Kepler’s and Newton’s Laws Quiz Answers
Question 1
1.
According to Newton's Law of Gravitation the force between two objects is F=G(M1M2/r2) where G is the
gravitational constant and M1 and M2 are the masses of two objects and r is the distance between the
two objects. If you were to move the two objects twice as far apart as the originally were, what would
happen to the force between them?
It would be 1/4 as much
It would be 2 times as much
It would be 4 times as much
It would be 1/2 as much
1 points
Question 2
1.
Consider a planet orbiting the Sun. If the mass of the planet doubled but the planet stayed at the same
distance, then the planet would take
the same amount of time to orbit the sum
more than twice as long to orbit the sun
half as long to orbit the sun
twice as long to orbit the sun
1 points
Question 3
1.
Kepler Second Law:
Realistic Approximation of Non-linear Ellipse: used to approximate the orbit of a body in space with
an elliptic orbit with a "bend" in the ellipse.
Law of Conservation of Momentum, used to show how the sun applies the majority of gravitational
forces on the Earth.
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Document Summary
Astr 111 kepler"s and newton"s laws quiz answers. According to newton"s law of gravitation the force between two objects is f=g(m1m2/r2) where g is the gravitational constant and m1 and m2 are the masses of two objects and r is the distance between the two objects. Realistic approximation of non-linear ellipse: used to approximate the orbit of a body in space with an elliptic orbit with a bend in the ellipse. Law of conservation of momentum, used to show how the sun applies the majority of gravitational forces on the earth. Elliptic displacement theorem: used to explain the exact area swept by a planet in orbit in a hyperbolic orbit. The law of equal areas, used to explain the idea that the closer to the sun the object is the faster it moves. , what is the orbital period of a planet with a.
