A 47.3-kg skater is standing at rest in front of a wall. Bypushing against the wall she propels herself backward with avelocity of -2.41 m/s. Her hands are in contact with the wall for1.19 s. Ignore friction and wind resistance. Find the average force she exerts on the wall (which has the same magnitude, but opposite direction, as the force that the wall applies to her). Note that this force has direction, which you should indicate with the signof your answer.