Three blocks are in contact with each other on a frictionless, horizontal surface. A horizontal force,
F = 10.0 N, is applied to block C so that all three blocks accelerate together. The mass of block A is 5.00 kg,
the mass of block B is 2.00 kg, and the mass of block C is 1.00 kg. What is the magnitude of the force by
block B on block A?