Standing still or not moving
if the speed is zero then the distance versus time line will be horizontal
a vertical one
the slope would be speed.
If you are plotting distance versus time it is a straight line with slope 300000
It tells you that the velocity of the body is not constant. There is acceleration or deceleration.
if the speed is zero then the distance versus time line will be horizontal
it is a positive relationship
a vertical one
It is false
no motion
Straight line
Yes it is.
Indirectly, yes. If the graph is a straight line there is no acceleration, if the graph is not linear there is acceleration.
Straight line
the object is not moving
A straight horizontal one does.
the slope would be speed.