Aperson begins to run at a velocity of 13 mph. this takes the person 10 minutes. what is the acceleration of the person for 10 minutes?

acc=speed change/time =13/10=1.3 miles per hour per minute

b.a device that inputs heat into a cool object

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.