Solve the all given parts of following problem:
Problem: Starting from home, you bicycle 23km north in 2.5h and then turn around and pedal straight home in 1.5h.
Part I: What is your displacement at the end of the first 2.5h?
Part II: What is your average velocity over the first 2.5h?
Part III: What is your average velocity for the homeward leg of the trip?
Part IV: What is your displacement for the entire trip?
Part V: What is your average velocity for the entire trip?
I would really appreciate some help to solve the above problem.