Introduction:

The revolution speed of Earth refers to the orbital velocity of the Earth around the Sun. It is approximately 30 km/s. On the other hand, the motion of trees is usually perceived as being at rest. This apparent contradiction can be explained by considering the frame of reference from which we observe these movements.

Frame of Reference:

When we say that the trees on Earth are at rest, we are referring to their motion relative to the surface of the Earth. From this frame of reference, the trees appear stationary, as they are anchored to the ground.

Earth's Rotation:

However, it is important to note that the Earth itself is rotating on its axis. This rotation causes day and night cycles and gives rise to the perception of the Sun moving across the sky. The rotational speed of the Earth at the equator is approximately 1670 km/h or around 465 m/s. This rotational motion of the Earth is what causes the apparent rising and setting of the Sun.

Revolution of Earth:

In addition to the Earth's rotation, it also revolves around the Sun in an elliptical orbit. This revolution speed is approximately 30 km/s. This means that the Earth, along with all the objects on its surface, including trees, is constantly moving through space.

Relative Motion:

To understand why the trees appear at rest despite the Earth's revolution speed, we need to consider relative motion. When we observe the trees, we are also moving along with the Earth's rotation and revolution. Therefore, the trees appear stationary relative to our frame of reference, which is also moving at the same speed as the trees.

Visual Perception:

Our visual perception is primarily based on relative motion and the comparison of different objects' positions. Since we are moving at the same speed as the trees, our brain interprets their position as being fixed relative to us. This is similar to how objects inside a moving vehicle may appear at rest to the passengers, as they are moving at the same speed as the vehicle.

Conclusion:

In conclusion, although the Earth is rotating on its axis at a significant speed and revolving around the Sun at a speed of 30 km/s, the trees on Earth appear at rest because our perception is based on relative motion. From our frame of reference, which is also moving at the same speed as the trees, their position appears fixed. It is important to consider the frame of reference when analyzing the apparent motion or rest of objects in the universe.