The angular momentum will be conserved.
If the path is perfectly circular, yes, the speed is constant. This should not be confused with the velocity, because while speed is constant, its direction is not; therefore velocity is always changing.
Yes, it does.
Yes. They orbit the Sun and as per Kepler's first law they follow an elliptical path. Do note that a circular orbit is a special type of elliptical orbit.
The gravitational pull exerted by the Sun, which acts as the central force keeping planets in orbit, causes them to move along elliptical paths. The conservation of angular momentum ensures that planets travel in elliptical orbits, with their speed varying at different points along the orbit to maintain this balance.
The curved path that a satellite follows is called an orbit. This orbit is typically elliptical in shape and allows the satellite to remain in constant motion around the celestial body it is orbiting, such as the Earth.
Mercury and Pluto have the most elliptical orbits among the planets in our solar system. Mercury's orbit is the most eccentric, while Pluto's orbit is also highly elliptical due to its distance from the Sun and its eccentric orbit.
As an elliptical orbit is any orbit that isn't perfectly circular, everything has an elliptical orbit. The planets Mercury and Pluto have the most elliptical orbits of the planets, and are easily seen to be oval shaped. Comets also have highly elliptical orbits.
elliptical
Yes, the distance from the sun is variable for anything with an elliptical orbit.
No, the moon does not accelerate as it revolves around Earth. Its speed remains relatively constant as it follows its elliptical orbit.
All planets have elliptical orbits.
The orbit of Mercury has the highest eccentricity of all the Solar System planets