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                                    Multiple Choice Questions with one correct answer. A correct answer carries 4 marks. A wronganswer carries a penalty of 1 mark.1· Three mdsses are stacked vertically up between 2 smooth surfaces. Find the acceleration of the system,45 x 418010 ms1 kg2 kg3 kg70 N(a) 1.67 ims(b) 2.16 ins(c) 3.5 ms-2(d) 4.2 ms | 
                            
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