Read the floating "How to play" card, then start playing: it hides itself as soon as you move a slider or take your first shot, and a round "?" help button appears in the corner (or press H) whenever you need the rules again. Set the launch Angle and Power sliders, then press LAUNCH (or Space, or tap the field) to throw the ball. Sounds now play for the launch, for impacts and breaking blocks, for the winning coin fanfare and for running out of shots; use the "Sound" button or press M to mute or unmute. Demolish or knock away the wooden, icy, stone and rubber blocks until the golden coin is uncovered, then hit or let it roll free to collect it. Each material has different mass, bounciness and friction, so plan your angle and speed. The dotted preview line and the live readout of launch speed, ideal range and peak height help you predict the parabola. You have a limited number of shots per level; fewer shots used means more points. There are 12 randomly generated levels of increasing difficulty. Arrow keys adjust angle and power, Space launches, R restarts the level. Points shown in the game are practice feedback only, not an official classroom grade.
Predict how launch angle and initial speed change the range and peak height of a projectile. · Explain that horizontal velocity stays constant while vertical velocity changes due to gravity. · Compare how mass, restitution (bounciness) and friction of different materials affect collisions and toppling. · Apply momentum and energy transfer ideas to knock structures apart with the fewest shots.