Which law states that each planet revolves so that an Imaginary line connecting it to the sun sweeps intervals? a the Kepler's second law of planetary motion b the Kepler's first law of planetary motion the Kepler's third law of planetary motion d the law of universal gravitation

## Step 1<br />The problem is asking us to identify the law that states that each planet revolves around the sun in such a way that an imaginary line connecting it to the sun sweeps out equal areas in equal intervals of time. This is a description of Kepler's second law of planetary motion.<br /><br />## Step 2<br />Let's briefly review the other options as well:<br />- Kepler's first law of planetary motion states that the orbit of every planet is an ellipse with the Sun at one of the two foci.<br />- Kepler's third law of planetary motion states that the square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.<br />- The law of universal gravitation states that every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.<br /><br />## Step 3<br />Based on the above explanations, it is clear that the correct answer is Kepler's second law of planetary motion.