The surface of Earth is an example of a free-float reference ...

[iveyjurea]

The surface of Earth is an example of a free-float reference frame.
 
  Indicate whether the statement is true or false

Question 2

Imagine another solar system, with a star of the same mass as the Sun. Suppose there is a planet in that solar system with a mass of 2MEarth orbiting at a distance of 1 AU from the star.
 
  What (approximately) is the orbital period of this planet? Explain your answer.

[flexer1n1]

Answer to Question 1

FALSE

Answer to Question 2

The orbital period of the planet would be approximately the same as that of the earth (1 year). Kepler's law considers only the sum of the object masses. In comparison with the mass of the star, the mass of the planet can be neglected. Thus, even though the planet is twice as massive as Earth, its orbit will be nearly the same as that of Earth.

[iveyjurea]

Thanks

[flexer1n1]

Welcome