Three blocks are connected by a massless rope that passes over massless pulleys as shown in the figure. The mass of block A is 1.4 kg, the mass of block B is 2.4 kg, and the mass of block C is 3.8 kg. As block B slides across the horizontal surface energy is dissipated at a rate of 3 J/m due to friction. What is the magnitude of the acceleration of block A (in m/s2)? B A C Type your