Respuesta :
We want to see which statements describe the siutuations where "constant-acceleration motion" fails.
We will see that the correct option is the first one.
"In practice, no object's motion is actually very close to the constant acceleration model."
We need to analyze each statement.
1) In practice, no object's motion is actually very close to the constant acceleration model.
This is true, for example, if we return to the leaf example, we usually would say something that "a falling object is only affected due to gravitational acceleration" and we assume that the acceleration is constant, but this is actually false, as there are a lot of other forces like friction or air resistance that also contribute. These forces also depend on the shape of the falling object and the velocity at which it falls, so the contributions to the acceleration are not constants, thus the acceleration is not constant.
2) the conditions required for the constant-acceleration model are not present, then the model may not describe the motion very well.
The conditions are not stated and depend on the particular situation, so this does not fit really well.
3) Any difference between the observed motion and the motion predicted by the constant- acceleration model must be the result of measurement error.
This is false, while yes, obviously, if you have a measurement error the predictions will be wrong, but even in the case where your measures are flawless, the constant-acceleration model ignores some things that contribute to the motion (are kinda small contributions, this is why we ignore them) so a lot of differences will be due to these contributions that we are ignoring.
So the correct statement is the first one.
If you want to learn more, you can read:
https://brainly.com/question/16820002
