Challenge: Who's Faster

Two animals are on an infinite plane.

• If animal 'A' wants to catch 'B' (and 'B' wants to get away from 'A') and 'B' is given a 20 meter head start, 'A' will always catch 'B'.
  
• Similarly, though it may seem strange, if animal 'B' wants to catch 'A' (and 'A' wants to get away from 'B') and 'A' is given a 20 meter head start, 'B' will always catch 'A'.