-- constant acceleration
-- speed increasing at a steady rate
-- distance increasing as the square of the time since everything started
Constant speed ... zero acceleration.
The graph you described is a speed-time plot. If the line is horizontal, that indicates no change in speed over time. In other words, there is no acceleration (acceleration is zero), since there is no change in speed.
constant speed
that would indicate that the object is at rest (static object) :D
The straight horizontal line on the graph says: "Whatever time you look at, the speed is always the same". This is the graph of an object moving with constant speed.
Constant speed ... zero acceleration.
The graph you described is a speed-time plot. If the line is horizontal, that indicates no change in speed over time. In other words, there is no acceleration (acceleration is zero), since there is no change in speed.
This depends on what the graph represents. If it is a graph of velocity on the vertical and time on the horizontal, then if acceleration is at a constant rate, the graph will be a straight line with positive slope (pointing 'up'). If acceleration stops, then the graph will be a horizontal line (zero acceleration or deceleration). If it is deceleration (negative acceleration), then the graph will have negative slope (pointing down).
The straight horizontal line on a graph is referred to as the x-axis. The vertical line on a graph is the y-axis.
constant speed
The line would indicate motion at a constant speed.
Any curved line will indicate a change in acceleration. Straight lines with slope indicate a steady velocity and straight lines with zero slope indicate a lack of motion.If the X axis (left to right) is for time and the Y axis (up and down) is for speed, it would curve up.
The given speed is constant for the given period
that would indicate that the object is at rest (static object) :D
time is normally the horizontal line
The straight horizontal line on the graph says: "Whatever time you look at, the speed is always the same". This is the graph of an object moving with constant speed.
That whatever is moving has stopped, if it is a speed-time graph. If it is, then you measure the horizontal line with the x axis which is presumably time, then you can find out how long the thing stopped.