Q12 · 2020 · Paper 1Simple familiar1 mark
QUESTION 12
Which of the following is one of Kepler’s laws of planetary motion?
(A)
The laws of physics are the same in all inertial frames of reference.
(B)
All planets move about the Sun in elliptical orbits, having the Sun as one of the foci.
(C)
The speed of light in a vacuum has the same value, c, in all inertial frames of reference.
(D)
The force of attraction between each pair of point particles is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
WORKED SOLUTION
1 markAnswer B
ANSWER
B
Worked solution
Kepler’s first law states that planets move in elliptical orbits with the Sun at one focus. Option B.
Selects option B.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.