What happens when a person’s immune system is very weak? a) the patient’s blood is unable to clot so he or she must take medication. b) the patient is able to fight off more infections than normal. c) the patient is unable to fight the infections a healthy person could resist. d) the patient is unable to take antibiotics and must get a flu shot.

Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?