Click and hold the red line in the top part of the graph in the window below. Start your click about an inch from the left of the screen and drag the red line down to the zero line below it and across the screen. You know you have done this when the red line lies right on the black line. your red line should look like this:

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Move your mouse along the x graph and you can see the black dot move with you. Hit the start button and observe the motion of the black ball on the right edge of the graph. What is the object doing at 10 meters?
Stopping? Speeding up? Standing still? Moving at a constant speed?