What is the SI unit of acceleration and force?

Explanation:

the SI unit of force is newton(N)

but i am not really sure of acceleration

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.