Speed.
If you also know what direction it changes, then you have velocity.
Velocity.
A Moment Changes Everything was created in 2008.
An objects speed at any particular moment in time is known as its instantaneous velocity. This is the rate of change or the derivative of the objects position.
when you are giving birth
key moment in drama means thast the moment suddenly changes
moment depends upon the force and the perpendicular distance between the force and the point where we are finding the moment. so when moment changes either the force will change or the perpendicular distance will change.
Exactly 50% of the moon is illuminated at any moment. As the moon revolves around the earth and its position changes, the fraction of that illuminated 50% that's visible to us on earth changes.
Derivative
no
objects dropped exactly at the same moment will hit the ground (on earth) at exactly the same moment.
It means where you are at this precise moment.
At this moment it is 17.42, but I don't know what it will be when you read this answer.