I still don't get?

Question

inertial coordinate system or refrence frame . Is the earth an inertial frame?

Answer 1

Grace & Gertie,
If the known local laws of physics are formulated in various frames of reference rotating relative to one another, the mathematical formulation of these laws vary. Generally, a centrifugal force and a Coriolis force, dependent on a direction and rate of rotation, must be introduced. In classical physics, these two forces are called fictitious forces because they do not obey Newton’s third law of motion. There are some special frames of reference, known as inertial frames, where these forces vanish. The rotation of these frames may be considered special, and indeed inertial frames are the only special ones known to physics. Equivalently, there is only one rotational frame of reference in which the axes of gimbal-mounted gyroscopes remain fixed. The Earth is not in an inertial frame, as evidenced by measurable centrifugal and Coriolis forces experienced by objects on Earth's surface.

Answer 2

inertial reference frames move at constant velocity. No matter what frame a person is in. They will always measure the smae mass, force acceleration and time, but they will not have the same velocity. so not matter what frame your in, the laws of physics will hold true in all frames

Answer 3

HUH???????????????