Suppose a police officer is 1f2 mile south of an intersection. driving north towards the intersection at 50 mph. At the same time, another car is 'ir'2 mile east of the intersection. driving east (away from the intersection) at an unknown speed. The officer's radar gun indicates 15 mph when pointed at the other car (that is. the straight-line distance between the ofcer and the other car is increasing at a rate 0! 15 mph). What is the speed of the other car? Speed = mph. Now suppose that the officer's radar gun indicates -15 mph instead (that is, the straight-line distance is decreasing at a rate of 15 mph). What is the speed of the other car this time? Speed = | mph