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You are driving a 1200kg Mini Cooper east on Central. You look down to read a text message from your mom. When you look up you realize that the light is red. You manage to apply your brakes and skid for 0.5 seconds before hitting the 2300kg SUV heading north on Rock Road. The two cars lock together and skid 9.8m in the direction of 25 degrees east of north before stopping. The surface that the cars slide on has an incline of 5 degrees above the horizontal. Police determine that the kinetic friction coefficient between the tires and the road is 0.7. Were you exceeding the 40 mph (17.87 m/s) speed limit before you applied the brakes? Was the SUV speeding before the collision?

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