A 25-gram paper cup falls from rest off the edge

of a tabletop 0.90 meter above the floor. If the

cup has 0.20 joule of kinetic energy when it hits

the floor, what is the total amount of energy

converted into internal (thermal) energy during

the cup’s fall?

(1) 0.02 J (3) 2.2 J

(2) 0.22 J (4) 220 J