anything greater than 0 mph
Yes. If an object is moving at a constant speed the average speed and the constant speed are the same.
The typical speed of a moving plate is about 21mm a year.
The speed of the object will increase.
None, as "not moving at all" is just moving at a constant speed of zero. Special relativity shows that there is nothing unique or different about zero speed. It is just a value of constant speed.
If you are moving at the speed of light, then "how fast" has no meaning.
Velocity is Speed in a given direction. Moving at constant velocity is equivalent to say moving with a constant speed in a specified direction. So, moving at constant velocity implicitly means moving with constant speed.
Yes if the train is moving forward, you are moving at the train speed + walking speed relative to the tracks.
Relative speed is the speed between two moving objects with no regards to a fixed reference. Speed is how fast something is moving with respect to an object.
it means the object is moving at a constant speed
acceleration is the increase of speed in a moving object. velocity is the speed and direction of a moving object.
Dark Matter Moving at the Speed of Light was created in 2004.
Velocity, or Speed