What Am I Riddles

Question: What is thrown to both kings and beggars?

Question: he is a king who's good at measuring stuff.

Question: I float when I am born, lay down when I am alive, and run when I am dead. What am I?

Question: Sometimes, I leave you with “mixed” feelings. More times than not, I teach you a lesson. I give what I didn’t create. What am I?

Question: My first doth affliction denote,
which my second is destined to feel.
And my whole is the best antidote,
that affliction to soften and heal.

What am I?