### Problem 1

(a) Calculate the momentum of a 2000-kg elephant charging a hunter at a speed of $7.50 \textrm{ m/s}$ . (b) Compare the elephant’s momentum with the momentum of a 0.0400-kg tranquilizer dart fired at a speed of $600 \textrm{ m/s}$. (c) What is the momentum of the 90.0-kg hunter running at $7.40 \textrm{ m/s}$ after missing the elephant?