Physics
Energy park
Energy conservation on a track: kinetic ↔ potential ↔ heat.
What happens
A cart on a roller-coaster track with one strict accountant: energy. On every hill speed is traded for height and bought back on the way down; the stacked chart shows the sum staying constant, until friction quietly skims its share into heat and the cart settles into the deepest valley.
Equations used in the module
Equations E = ½mv² + mgh + Q Q_friction = ∫ mβv² dt Q_impact = ½m(v_before²−v_after²) N = m(g cos θ + v²κ) N ≥ 0
