Three boxes (m1 = 10.0 kg, m2 = 20.0 kg, and m3 = 30.0 kg) are in contact with each other on a frictionless horizontal surface. A horizontal force F

= 75.0 N is applied on m3, as shown in Figure A1.14. Calculate, a. the acceleration of the system. b. the net force on each block. c. the contact forces between the blocks.