Solve the all given parts of following problem:

Problem: You are on a cruise ship traveling north at a speed of 9 m/s with respect to land.

Part A: If you walk north toward the front of the ship, with a speed of 2.9 with respect to the ship, what is your velocity with respect to the land?

Part B: If you walk south toward the back of the ship, with a speed of 1.2 with respect to the ship, what is your velocity with respect to the land?

Part C: Your friend is sitting on another cruise ship traveling south at 12 m/s. As you walk toward the back of your ship at 1.2 m/s, what is your velocity with respect to your friend?

Part D: Below is some space to write notes on this problem?

Please use great detail in explaining the solution. Thanks.