Chemistry, 21.05.2020 23:08, cheerleader791

1. A force of 120 lbs is required to move a 45 lb bag of cat litter up a 3
ft ramp that is 2 ft off the círound.
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1. A force of 120 lbs is required to move a 45 lb bag of cat litter up a 3
ft ramp that is 2 f...