Problem $1$: Calculate the average decelerating impact force if a person falling with a terminal velocity of $62\mathrm{.}5\frac{m}{sec}$ is decelerated to zero velocity over a distance of $1$ m $.$ Assume that the person's mass is $70$ kg and that she lands flat on her back so that the area of impact is $0\mathrm{.}3m^2.$ Is this force below the level for serious injury? $($For body tissue, this is about $5{10}^{6}dy\frac{n}{c}{m}^2.)$