1. It is spring break at Huxley College; the annual migration to Fort Lauderdale has begun. Hovering 1000 feet directly above the southbound interstate is the helicopter state patrol, with Officer Ingkvist on the radar gun. A car with Huxley decals passes underneath and continues south. Jason and Margaret, fresh form their Calculus midterm, aren't watching the speedometer. Officer Ingkvist fires. In moments, the results are in: At the moment of firing the car was 2000 feet from the helicopter and moving away at 85 feet per second. "Got 'em!" mutters Ingkvist under her breath. In traffic court, Jason and Margaret deny all wrongdoing. "The speed limit is 65 mph," they tell the judge. "We were clocked at 85 feet per second. But a simple calculation shows that 65 mph is 95 feet per second. Hence, clearly, we couldn't have been speeding." "Watch your language," replies the judge, "but what you say makes sense. Explain yourself Ingkvist. Use that blackboard. Be clear. And cite your source."

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