A boxer tries to release his anger at a sheet of paper. He punches the sheet of paper in midair and brings it from rest to a speed of 30 m/s in only 0.06 s. (a) What is the horizontal acceleration of the piece of paper (while the boxer is hitting it)? (b) If the mass of the paper is 0.003 kg, how much force did the boxer exert on it? (c) How much force did the paper exert on the boxer? Make sure to show your work (or at least starting equations), and answer as completely as possible.