What would you expect to happen to the acceleration if all friction were removed from the ramp, making the net force even higher than 600 N?

if the friction was removed from the ramp, the acceleration would drasticly increase, making it hard to stop.

Explanation:

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

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.