a car accelerates from 4 meters/second to 16 meters/second in 4 seconds. the car's acceleration is
meters/second^2

3m/s^2

Explanation:

The equation of motion is given by:

V=U +at where V is the final velocity, U is the initial velocity, a is the acceleration and t is the time for which the object underwent acceleration.

Solving for a gives a = 3m/s^2

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.