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Mass.
Both mercury and mars have a gravity which is around 38% of earths. Mercury's gravity is 37.8% of earths, Mars' gravity is 37.7% of earths.
The satellite is being pulled by the earths gravity all of the time, but the satellite also has an orbital velocity, meaning that is is travelling at high speed. These two opposing forces balance out, the 'sideways' speed of the satellite wants to take it away into space, but the gravity of the earth is always pulling it in. The satellite maintains its speed as there there are no frictional forces to slow it down in space, so it maintains an orbit.
At 5km up the Satellite would still be in the earths atmosphere and would also be subject to gravity. Put simply it would just fall back down. Space starts at about 100km up or 62 miles. The moon also has 1/6ths of Earths gravity and at 5km up there would be little if any pull from the moon.
About 0.183g, where one g is the earths gravity, so about one fifth of the earths gravity. It is similar to our own moons surface gravity.
Both have masses; therefore they attract one another.
That is not English; that is not physics. Generally speaking, the speed of the satellite and gravity cancel each other. As the satellite slows (friction), gravity wins.
Gravity is affected by the mass of an object, The greater the mass, the greater the gravity. Apples have gravity, but because they have such a small mass the gravity is tiny, whereas Earth has a huge mass which in turn means that it has a huge and noticeable gravity.
nither it is a natural satellite held in orbit by the earths gravity. Without it we would have no tides.
nither it is a natural satellite held in orbit by the earths gravity. Without it we would have no tides.
nither it is a natural satellite held in orbit by the earths gravity. Without it we would have no tides.
Whatever goes up and remains within the influence of earths gravity must come down, or circle the earth as a satellite.
No. Gravity is responsible for all 'orbits'. If there were no other body attracting it, the orbiting object would sail off in a straight line.
No. They orbit Earth; and the reason they orbit is because of gravity.
Mass.
free from the motion of earth
Both mercury and mars have a gravity which is around 38% of earths. Mercury's gravity is 37.8% of earths, Mars' gravity is 37.7% of earths.