Q4 · 2023 · Paper 1Simple familiar1 mark
QUESTION 4
Kepler’s third law
(A)
describes the elliptical orbit of planets.
(B)
combines Newton’s first law of motion with uniform circular motion.
(C)
equates the area of the arc sweep of a planet to the time taken to complete it.
(D)
describes the relationship between uniform circular motion and the Law of Universal Gravitation.
WORKED SOLUTION
1 markAnswer D
ANSWER
D
Worked solution
Kepler’s third law relates orbital period and orbital radius and can be obtained by combining gravitational force with the centripetal-force requirement for an orbit. Option D.
Selects option D.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.