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Decrease in potential energy of a ball of mass 20 kg which falls from a height of 50 cm isa) 968 Jb) 98 Jc) 1980 Jd) None of these |
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Answer» Decrease in potential energy of a ball of mass 20 kg which falls from a height of 50 cm is a) 968 J b) 98 J c) 1980 J d) None of these |
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