Question

keplers second law quick check
how did kepler develop his second law of motion? (1 point)

he used a telescope to carefully follow and time the orbital motion of mars.

he compared data of planetary motion at different times along orbits.

he made accurate measurements of the positions of all the planets over many years.

he invented a telescope that was strong enough to view all planets of the solar system along their orb

Explanation:

• Option A: Kepler didn't use a telescope (telescopes weren't advanced enough then, and he relied on Tycho Brahe's data).
• Option B: Kepler analyzed Tycho Brahe's planetary motion data (collected over time) to develop his laws, including the second law (equal areas in equal time).
• Option C: Tycho Brahe made the position measurements, not Kepler.
• Option D: Kepler didn't invent such a telescope, and telescope technology at his time couldn't view all planets' orbits as described.

Answer:

B. He compared data of planetary motion at different times along orbits.