Answer:
constant speed; 10 cm/s
Explanation:
We can see that this graph is a straight line diagonally across the graph. This means the speed is constant.
We can check this by seeing for every second, how many centimeters the ant travels. For 1 second, 10 cm is traveled. For 2 seconds, 20 cm is traveled, and so on. Basically, for every second, the ant travels 10 cm.
Hope this helps! :)