SOLAR SYSTEM

Detailed explanation-1: -The greater the acceleration, the greater the change in velocity-this causes the object to move faster. This means that objects in small orbits travel faster than objects in large orbits.

Detailed explanation-2: -We can say that there is an inverse relationship between orbital radius and orbital speed. This is because if an object has a greater orbital radius, it will have a slower speed. Likewise, an object with a smaller orbital radius moves faster.

Detailed explanation-3: -The larger a spacecraft’s orbit, the slower the spacecraft travels. So if you wanted to pass a spacecraft just ahead of you, you would have to fire a thruster in a forward direction. This would decrease your orbital energy and drop you into a lower orbit, where you will travel faster!

Detailed explanation-4: -The closer a planet is to the Sun, the stronger the Sun’s gravitational pull on it, and the faster the planet moves. The farther it is from the Sun, the weaker the Sun’s gravitational pull, and the slower it moves in its orbit.

Detailed explanation-5: -As seen in the equation v = SQRT(G * Mcentral / R), the mass of the central body (earth) and the radius of the orbit affect orbital speed. The orbital radius is in turn dependent upon the height of the satellite above the earth.