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IMSO 2017 Science International - Theory I Question 17

IMSO Science · IMSO 2017 Science International - Theory I

Question 17

As a planet orbits the sun, an imaginary line joining a planet and the sun sweeps out equal areas in the same amount of time. This is shown in the figure below where the Earth takes 40 days to move from position 1 to 2, and another 40 days to move from position 3 to 4. The area of A is equal to the area of B. Which one of the following statements is false?

Question illustration
  1. Planets will travel faster when they are nearer to the sun.
  2. Planets which are closer to the sun will take less time to make a full orbit.
  3. Planets will spin slower when they are further from the sun.
  4. Planets will experience more gravitational force when they are nearer to the sun.