The train has no engine. Where does all its speed come from, and where does it go?

STATION0 m5 m10 m15 m20 mchain lift10 m hillbrakesstation
height
0.0 m
speed
0.0 m/s · 0 km/h
g-force
1.0 g
energy
height 0% · motion 0% · heat 0%
chain motor
off
brakes
0 kN
riders
0 · train 1,800 kg

Press the steps in order, or press Auto. It runs in real time. Watch the energy reading: height, motion and heat always add up.

Physics from LibreTexts College Physics (OpenStax): 7.3 Gravitational Potential Energy (the 20 m coaster, 19.8 m/s), 6.3 Centripetal Force (g-force on curves), 7.5 Nonconservative Forces (brakes make heat). Friction on the track is left out, as in the text. Train masses, chain speed and brake strength are example values. Drawn to scale with the Anatomy kit (MIT license).