Assignment:
A Car leaves Oak Corner at 11:33 a.m traveling south at 70km/h. at the same time, another car is 65 km west of Oak Corner traveling east at 90km/h.
a. Express the distance d between the cars as a function of the time t after the first car left Oak Corner.
b. Show that the cars are closest to each other at noon.
Provide complete and step by step solution for the question and show calculations and use formulas.