Three blocks are in contact on a frictionless, horizontal table top. An external force is applied to block 1 and the three blocks are moving with a constant acceleration of 4.45 m/s2. Determine the contact force between th e blocks m1 and m2. Express your answer in Newtons. Use m1 = 3.40 kg, m2 = 6.25 kg and m3 = 4.60 kg