The average person passes out at an acceleration of 7g (that is, seven times the gravitational acceleration on earth). suppose a car is designed to accelerate at this rate. how much time would be required for the car to accelerate from rest to 62.6 miles per hour? (the car would need rocket boosters! )

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?