Kangaroo was bumped by Sheep. Now Kangaroo is angry, and the chase is on: can Sheep escape? No. Of course not.
Sheep runs 10 meters away in a single second, but Kangaroo is not worried. Kangaroo jumps directly toward Sheep, but is still 1 meter out of range. But no matter where Sheep runs, Kangaroo will jump behind, so that Sheep is just over 6.5 meters away. Sheep is forced to run directly toward the pond.
Perhaps, if Kangaroo were not quite so fast, Sheep could have escaped. Sometime later, perhaps we will discuss a scenario where Kangaroo jumps only thrice per second, and Sheep flees at 9 meters per second.