Velocity-time Graphs (Distance Travelled)

A velocity-time graph illustrates how the speed of an object changes over a particular span of time.
The vertical axis represents velocity or speed, where the positive side shows forward movement and the negative side indicates reverse movement.
The horizontal axis represents time.
A straight line on a velocity-time graph illustrates a constant speed, while a non-linear (curved) line represents varying speed.
The gradient of the line on the graph shows the rate of acceleration or deceleration. A steeper line shows faster acceleration or deceleration.
The area underneath the graph line is equal to the total distance travelled by the object.
It’s crucial to note that if a graph falls below the x-axis (time), it signifies that the object has changed direction.
A horizontal line indicates that the object is travelling at a constant velocity, with no acceleration nor deceleration.
A line with an upward slope signifies acceleration, whereas a line with a downward slope suggests deceleration or slowing down.
A graph that starts above the x-axis and then crosses it to the negative side indicates that the object has changed direction and started moving in the opposite direction.
If the velocity-time graph is a curve, then the object is either accelerating or decelerating at a non-constant rate.