Kepler's First and Third Laws Quick Check
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Question
Which of these describes Kepler’s third law of orbital motion?(1 point)
Responses
T∝a^2
cap t proportional to A squared
T^3 ∝a^2
cap t cubed proportional to A squared
T^2 ∝ a^3
cap t squared proportional to A cubed
T^2∝a
cap t squared proportional to A
1 answer
Kepler's Third Law of Orbital Motion states that the square of the period of orbit \( T \) (the time it takes for a planet to complete one orbit) is directly proportional to the cube of the semi-major axis \( a \) of its orbit. Therefore, the correct response is:
T² ∝ a³
(cap t squared proportional to A cubed)
