A police car is moving north towards an intersection at 24 miles per hour, and the police inside the car is using radar to determine the rate at which the distance is changing between them and another vehicle that is traveling west. When the police car is 3 miles south of the intersection and the other vehicle is 4 miles west of the intersection, it is determined that the distance between them and the other vehicle is increasing at a rate of 20 miles per hour. Find the speed of the car when the car is 4 miles west of the intersection.

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.