a 100 kg car enters a level curve at 20m/s. if the curve has a radius of 80 m, what centripetal force must be applied by friction to keep the car from skidding?

answer; equivalent to a one(1) horsepower motor;

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.