009 10.0 points Given: The surface is frictionless, Two blocks in contact with each other move to the right across a horizontal surface by the two forces shown.
69 N 2.5 kg 7.8 kg 21 N Determine the magnitude of the force ex- erted on the block with mass 2.5 kg by the block with mass 7.8 kg. Answer in units of N.
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