Problem 11. (1 point) It took 21 minutes for Usain the snail to reach the juicy rain drop that he discovered 36 centimeters from his home. Unfortunately, as soon as he reached the raindrop he was frightened by an ag- gressive caterpillar so he immediately turned back. He was tired, so after his second 21 minutes he is only half way home. Hint: Speed is always nonnegative but velocity can be negative if the movement is backward. What is his average velocity? cm/min What is his average speed? cm/min Answer(s) submitted