Physics - Mechanics - Work and Energy - Conservation of energy - Where Did the Energy Go?
Present 6 scenarios of 'disappearing' energy and ask where it went. (1) A ball bounces lower each time (Heat from deformation). (2) A car brakes to a stop (Heat in brakes). (3) A pendulum eventually stops swinging (Air resistance → heat). (4) A satellite in orbit doesn't slow down (No air resistance