I'd like to make sure I understand it. It reads... "Two objects, A and B, are placed in contact with each other on a horizontal, frictionless surface. Object A weighs 1.5kg, and B weighs 2.5kg. If a force of 8.0N is exerted on the surface of object A in contact with B AND on the opposite surface, (1) determine the acceleration of A and B (2) determine the force pushing B." Do you think this means 8.0N is applied to both objects A and B simultaneously? (I assume "opposite surface" means the side of A opposite to that contacting B.