you are a poor student with an old car that has bald ties. you are traveling at 60 miles/hour and you slam on the brakes (i.e., your wheels are no longer turning). assume there is a layer of pure water 0.1 mm thick between your tires and the road, i.e, the rubber is not meeting the road. assume each of your tires contacts the water layer over a rectangle 10cm wide and 15 cm long. how much braking force (in Ibs) can you expect?