Physics, 23.01.2020 03:31 clay373

"your friend has a job as a pizza delivery person. she carries a few pizzas, weighing 20 n, up four flights of stairs , a height of 30 m. how much work does she do? " if you could explain how to do this that would be great!

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"your friend has a job as a pizza delivery person. she carries a few pizzas, weighing 20 n, up four...

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