The Earth travels on its orbit at a speed of approximately 4400 km per

The Earth travels on its orbit at a speed of approximately 4400 km per hour. Why do we not feel this high speed ?

We are too small compared to the size of the Earth
Our relative speed with respect to the Earth along the Earth's orbit is zero
The gravity of the Earth constantly pulls us towards the Earth's centre
The solar system as a whole is also moving
This question was previously asked in
UPSC CAPF – 2010
We do not feel the high speed of Earth’s orbit because our relative speed with respect to the Earth along the Earth’s orbit is zero.
– We are moving along with the Earth at the same speed and in the same direction as it orbits the sun.
– In physics, we typically feel acceleration (changes in speed or direction), not constant velocity. Since our velocity relative to the Earth’s surface (for the orbital motion) is zero and remains zero, we don’t feel the orbital speed.
– This is related to the concept of inertial frames of reference. We are in the same inertial frame as the Earth’s surface for this motion.
While the Earth is constantly accelerating towards the sun due to gravity (causing its curved path), this acceleration is relatively small (about 0.006 m/s²) and is the same for everything on Earth, so we don’t feel it as a distinct force pulling us away from the vertical. Other motions, like Earth’s rotation, do have slight effects (e.g., centrifugal force), but the primary reason for not feeling the vast orbital speed is being co-moving with the Earth.