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                                    Q.38 A stone of mass m, moving with a uniformspeed v suddenly explodes on its own intotwo fragments. If the fragment of mass m2 isat rest, the speed of the other fragment is-(A)m1v/ (m,-m2)(B) m2v/(m1 -m2)c)m1v(m1+m2)d)m1v/m2 | 
                            
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