it takes 20 seconds for a girl to climb up the stairs while the girl B takes 15 seconds for the same job compare number 1 the work done and number 2 the power spent by them
(i need a detailed and step by step explanation)
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it takes 20 seconds for a girl to climb up the stairs while the girl B takes 15 seconds for the same job compare number 1 the work done and number 2 the power spent by them
(i need a detailed and step by step explanation)
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