* Kepler's Laws of Planetary Motion:
* Kepler's Second Law: A planet sweeps out equal areas in equal times. This means that a planet moves faster when it's closer to the Sun and slower when it's further away.
* Gravity and Orbital Speed: The Sun's gravity is the strongest force acting on Mercury. The closer a planet is to the Sun, the stronger the gravitational pull, and the faster the planet needs to move to maintain its orbit.
Think of it like this:
Imagine a spinning ice skater. When they pull their arms in, they spin faster. The closer they are to the center of their spin, the faster they need to move to maintain their momentum. The same principle applies to planets and the Sun. Mercury is close to the Sun, so it needs to travel quickly to stay in orbit.
