A $3\mathrm{.}3$ kg block moving at $8\mathrm{.}7($ m$)/($s$)$ collides with a wall. As a result of the collision, the direction and magnitude of the velocity of the block has changed to $3\mathrm{.}3($ m$)/($s$).$ What is the magnitude of the average force $($in N$)$ exerted by the wall on the block if the block was in contact with the wall for $6\mathrm{.}2$ ms$?$