Person A starts at the origin and moves west at 60 MPH. Person B starts 200 miles north of the origin and moves south at 70 MPH. Write a function that computes the distance between the two people as a function of t in minutes.
(The (x,y) position of person A is (60·t/60, 0) and the (x,y) position of person B is (0, 200 - 70·t/60). Use the distance formula to write a function.)
1. What is the distance at t=0?
2. What is the distance at t=30?
3. What is the distance at t=120?