Newton's Law of Gravitation + Kepler's Laws of Planetary Motion

Front

A planet moves __________ when it is farthest from the sun.

Back

slower

Front

What is the relationship between the mass of objects and the gravitational force between them?

Back

As the mass increases, the gravitational force increases.

Front

Which planet would have the longest year?

Back

Neptune

Front

The gravitational pull is __________ proportional to the mass of the objects.

Back

directly

Front

Planets travel around the sun in __ orbits.

Back

elliptical

Front

What is Newton's Law of Gravitation?

Back

It states that every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What is Kepler's First Law of Planetary Motion?

Back

Planets move in elliptical orbits with the Sun at one focus.

Front

What does Kepler's Second Law state?

Back

A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time.

Front

What is Kepler's Third Law of Planetary Motion?

Back

The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.

Front

How does distance affect gravitational force?

Back

As the distance between two masses increases, the gravitational force between them decreases.