if you apply 1 joule of energy to lift a book of 0.5 kgs it will rise up to
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Work=mgh
1 joule=(0.5)(9.8)h
4.9h=1
h=1/4.9
h=0.20 m
1 joule=(0.5)(9.8)h
4.9h=1
h=1/4.9
h=0.20 m
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