If the speed limit is 60 mph, was Car A speeding?
Road: new, dry asphalt
Car A (with a mass of 3000 kg) skids for 30 m and crashes into Car B (with a mass of 2000 kg). Car B was initially at rest. After the collision, car A and car B stick together and skid for another 15 m before coming to a complete stop. Determine the initial speed of car A before its initial skid to determine if the driver was speeding or not.