Yes
No, Einstein proved that all inertial frames are equally valid references. You don't have to assume it's "fixed in place" or even know exactly how it's moving relative to any other frame as long as you know how the measured object is moving relative to the chosen reference frame.
not moving.
Something that was assumed to have happened, but not proven.Something that was assumed to have happened, but not proven.Something that was assumed to have happened, but not proven.Something that was assumed to have happened, but not proven.Something that was assumed to have happened, but not proven.Something that was assumed to have happened, but not proven.
An assumer is a person or means by which something is assumed.
Yes, that is true. Motion is always measured relative to a chosen frame of reference, which could be a stationary object, observer, or a specific point in space. The choice of frame of reference can affect how motion is perceived or described.
She assumed that I would bring something to eat but I was not aware of that.
A reference point is assumed to be fixed in space, meaning it does not change its position relative to other objects. This allows for comparison of the motion of other objects in relation to the reference point. It is an essential concept in physics for measuring distance, speed, and direction.
It's never been measured, but it is assumed to be the same as the speed of light.
It's never been measured, but it is assumed to be the same as the speed of light.
An assumer is a person or means by which something is assumed.
A revelation that something you assumed is right is completely wrong.
The word "expected" is not the same as "required". Something that is "expected" is something that is assumed will occur. Something that is "required" is something that is essential.