Asha lifts a doll from the floor and places it on a table. If the weight of the doll is known, what else does one need to know in order to calculate the work Asha has done on the doll ?
(a) The time required
(b) Height of the table
(c) Mass of the doll
(d)Cost of the doll or the table
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Not sure but I think that she needs to know the height of the table
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