Two blocks, C ( ) and D ( )

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Two blocks, C (1.5 kg1.5\,\text{kg}) and D (2.5 kg2.5\,\text{kg}), are in contact on a frictionless horizontal surface. A constant horizontal force of 12 N12\,\text{N} pushes block C toward block D, and the blocks accelerate together. Which of the following is closest to the magnitude of the force that block D exerts on block C? (a) 4.5 N4.5\,\text{N} (b) 8.0 N8.0\,\text{N} (c) 6.0 N6.0\,\text{N} (d) 12 N12\,\text{N}

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