The cone falls with a speed of vo and penetrates the packing material. the acceleration after impact is measured to be a = g – cy 2 , where c is a positive constant and y is penetration distance. if the maximum depth is observed to be ym , determine and expression for the constant c.

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?