Waterslides are nearly frictionless , hence can provide bored students with high speed thrills. One such slide,DerStuka, named for terrifying German dive bombers of World War II, is 72.0ft high (21.9m) found at Six Flags in Dallas, Texas.
(a) Determine the speed of a 60.0kg woman at the bottom of such slide , assuming no friction is present
(b) If the woman is clocked at 18.0m/s at the bottom of the slide, find the work done on the woman by friction.