Secondary · O-Level Physics
Coaster Energy
Round 1/6Score: 0
Coaster challenge
Cart mass
Gravitational field strength10 N/kg
Target
Track
0.0 m
50%
Adjust the release height, then check.
Live energy dashboard
Kinetic Eₖ
Potential Eₚ
Thermal
Conservation of energy
Gravitational energy becomes kinetic energy or thermal energy. The total remains constant.
The physics
Eₖ = ½mv²; Eₚ = mgh; g = 10 N/kg.
Work done against friction W = Fd, where F is in N and d in m.
Conservation: Eₖ + Eₚ + Eₜₕ = initial mgh.
Efficiency η = useful output energy ÷ input energy × 100%.
Model: point-mass cart, no rotational energy. Track friction acts only on the stated rough section. Efficiency in rough-track rounds is energy gained in the final climb divided by the initial gravitational energy.