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40.Consider two observers was moving with respect to each other at a speed V along a straight line. They observe a block of mass moving adistance l on a rough of surface .the following quantities will be same as observed by the two observes

Answer» 40.Consider two observers was moving with respect to each other at a speed V along a straight line. They observe a block of mass moving adistance l on a rough of surface .the following quantities will be same as observed by the two observes


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