How did Kepler develop his second law of motion?(1 point)
Responses
He used a telescope to carefully follow and time the orbital motion of Mars.
He used a telescope to carefully follow and time the orbital motion of Mars.
He made accurate measurements of the positions of all the planets over many years.
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 orbits.
He invented a telescope that was strong enough to view all planets of the solar system along their orbits.
He compared data of planetary motion at different times along orbits.
He compared data of planetary motion at different times along orbits.
According to Kepler’s second law of motion, which statement describes the area swept out by a line between a planet and the sun?(1 point)
Responses
It increases as the planet approaches the sun.
It increases as the planet approaches the sun.
It increases as the planet moves away from the sun.
It increases as the planet moves away from the sun.
It is constant for equal times.
It is constant for equal times.
It is constant if the planet moves at a constant speed.
It is constant for equal times.
Which does Kepler’s second law state about planetary motion?(1 point)
Responses
The planet travels along an elliptical orbit.
The planet travels along an elliptical orbit.
A line between the planet and the sun covers equal areas in equal times.
A line between the planet and the sun covers equal areas in equal times.
The square of the orbital period is directly proportional to the cube of the semi-major axis.
The square of the orbital period is directly proportional to the cube of the semi-major axis.
Planets move at the same speed at all points along their orbit.
A line between the planet and the sun covers equal areas in equal times.
He compared data of planetary motion at different times along orbits.
Correct answer:
He used a telescope to carefully follow and time the orbital motion of Mars.
Explanation:
Kepler developed his second law of motion by observing and studying the orbital motion of Mars. He used a telescope to carefully track the planet's movement and measure its position over time. By comparing the data obtained from these observations, Kepler noticed that Mars traveled at different speeds at different points in its orbit. This led him to formulate his second law, which states that a planet sweeps out equal areas in equal times as it orbits the sun.