# Quick Answer: Are Planets In Free Fall?

## Is the Earth in free fall?

Yes.

Free fall is defined as “any motion of a body where gravity is the only force acting upon it.” In the vacuum of space, where there are no air molecules or supportive surfaces, astronauts are only acted upon by gravity.

Thus, they are falling towards Earth at the acceleration of gravity..

## Do planets fall?

In fact, if you take the time to work out the new position, it’s still approximately as far away from the Sun as it was at the starting position. So in fact, the planets do fall, they just keep on missing the Sun. In fact, they’re missing by approximately their orbital altitude.

## Are satellites in free fall?

The Short Answer: Satellites don’t fall from the sky because they are orbiting Earth. Even when satellites are thousands of miles away, Earth’s gravity still tugs on them.

## What is the formula for free fall?

Free fall means that an object is falling freely with no forces acting upon it except gravity, a defined constant, g = -9.8 m/s2. The distance the object falls, or height, h, is 1/2 gravity x the square of the time falling. Velocity is defined as gravity x time.

## Why Earth doesn’t fall on its own?

Well, the short answer is that the earth is not massive enough. Although like any other body, gravity tries to collapse earth, this inward pull is resisted by the materials that make up our planet. The atoms that compose these materials repel one another and prevent this collapse.

## At what height do you become weightless?

Any object that is falling freely is weightless, no matter where it happens to be. This can be the International Space Station at a height of 200 miles, a NASA reduced-gravity airplane at a height of several thousand feet, a drop tower at several hundred feet, or you jumping off a chair at 3 feet.