Jennifer lifts a 2.4 kg carton of cat litter from the floor to aheight of 0.81 m.
(a) How much total work is done on the carton during thisoperation?
___________J
b) Jennifer then pours 0.7 kg of the litter into the cat'slitter box on the floor. How much work is done by gravity on the0.7 kg of litter as it falls into the litter box?
____________J
