Question $1(3$ points$)$

A $0\mathrm{.}2-kg$ wad of clay is released from rest and drops h

$=0\mathrm{.}76m$ to a concrete floor. The clay does not

rebound, and the collision lasts $0\mathrm{.}02$ s $.$ Determine the

time average of the force which the floor exerts on the

clay during the impact.