Study of motion
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14. LUM velocity-time graphs

Look at the velocity-time graph on the left. This object travels at a constant velocity of 20 m/s (+20 m/s) for 4 seconds.

The velocity-time graph for a LUM is a horizontal straight line.

In this case, the velocity is constant and positive, +20 m/s, so, the object is moving to the right (or upwards if the movement is vertical).



Here is another example, on the right, but now velocity is negative, -20 m/s and constant. This is a LUM graph for an object moving with -20 m/s.


A

L

C