Two 5 kg potted cacti, one in a black pot and one in a blue pot, slide down a sagging shelf in the same direction with the same speed.
Which two equations correctly model the momentum of the two-cactus system?

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.