- Potential Energy at Peak 1: PEp1 = Mg x 60 = 294 kJ - Kinetic Energy at Peak 1: KEp, = EA - PEp1 = 367.5 - 294 = 73.5 kJ - Momentum of the cart at Peak 1: Pp1 = Mv2 = 8573.2 kg m/s - Kinetic Energy at Valley 2: KEv2 = EA -Mg x 20 = 270 kJ - Potential Energy at Valley 2: potential energy is lost and turns into kinetic energy Momentum of the cart at Valley 2: Pv2 = Mv3= 16147 kg m/s - Potential Energy at Peak 2: PEp2 = Mg x 40 = 196 kJ - Kinetic Energy at Peak 2: KEp2 = EA - PEp2 = 367.5 - 196 = 171.5 kJ - Momentum of the cart at Peak 2: Pp2 = Mv4 = 13096 kg m/s