What was the initial speed of a car if its speed is 40 m/s after 5 seconds of accelerating at -4 m/s2? a. 20 m/s b. 50 m/s c. 60 m/s d. 25 m/s

Hmm 70m/s per hour

connect the batteries in series and hope

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.