A 42-kg skater is standing still in front of a wall. By pushing against the wall she propels herself backward witha velocity of -1.6 m/s. Her hands are in contact with the wall for 0.80 s. Ignore friction and wind resistance. Findthe magnitude and direction of the average force she exerts on the wall (which has the same mag… Show more… Show more Math PHYS 225 Share QuestionEmailCopy link Comments (0)