Thank you! (:
That would mean I made a mistake about the airplane as well, right? If the yo-yo moved to the side due the movement of the plane, that would mean the yo-yo is in a non-inertial frame, right? And if someone saw this from outside the plane, they would be in an inertial frame of...
Okay, so I know what inertial and non-inertial frames of reference are:
1. Inertial is when Newton's laws of motion hold.
2. Noninertial is when they do not hold (the object is accelerating without a force).
And I have a few examples as well, such as when you are is in a car and the car is...