1. A planet revolves around a certain star. At one point in the planet's orbit, called periapsis, it passes much closer to the star. Which of the following statements about periapsis is true? The planet orbits with a greater speed during periapsis. The planet orbits with a slower speed during periapsis. The planet's orbital period becomes shorter after every periapsis. O The planet's orbital period becomes longer after every periapsis.D 3. Which of the following statements is supported by Kepler's laws of planetary:r motion? 0 Earth orbits the Sun at a slightly faster speed every 1,rear. O Ea rth's orbit is a perfect circle, with the Sun located at the center of the circle. 0 Earth orbits the Sun at a constant speed, never speeding up or slowing down. 0 Earth has an elliptical orbit, with the Sun located at one Focus of the ellipse. m 5. At one point, the international space station {155] is at a distance of 410 km above the Earth. If the Earth has a radius of 6378 km, and a mass of 5.97 a: HP1 kg, what is the acceleration of gravity on the 155? O 9.12 2 3