1.

A block 'B' rests on 'A'. A rests on a horizontal surface 'C' which is frictionless. There is friction between A and B. If 'B' is pulled to the right

Answer»

B moves FORWARD and A to the LEFT
'B' only moves to the left
'B' does not MOVE
'A' and 'B' move together to the RIGHT

Answer :D


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