Physics 1 · Unit 4: Energy
Roller Coaster Energy Analysis
A roller coaster car of mass 500 kg starts from rest at the top of a 40 m hill. Use g = 10 m/s².
(a)3 points
Calculate the speed at the bottom, assuming no friction.
(b)3 points
If friction does -5.0×10⁴ J of work, find the speed at the bottom.