{"job_id":"anim-job-2fced0c4-3270-4132-8183-0941139a662e","request_id":"bulk-2026-05-20T10-21-44-856Z-15-physics.11.kinematics.projectile-motion","status":"complete","asset":{"primary_url":"https://storage.googleapis.com/pupiltree-animation-assets/anim-job-2fced0c4-3270-4132-8183-0941139a662e/walkthrough.mp4","thumbnail_url":"https://storage.googleapis.com/pupiltree-animation-assets/anim-job-2fced0c4-3270-4132-8183-0941139a662e/thumb.jpg","transcript_url":"https://storage.googleapis.com/pupiltree-animation-assets/anim-job-2fced0c4-3270-4132-8183-0941139a662e/transcript.vtt","interactive_url":"https://storage.googleapis.com/pupiltree-animation-assets/anim-job-2fced0c4-3270-4132-8183-0941139a662e/index.html","scenefile_url":"https://storage.googleapis.com/pupiltree-animation-assets/anim-job-2fced0c4-3270-4132-8183-0941139a662e/scene-source.json","duration_seconds":15,"byte_size":457909,"renderer":"html_three_js_local","parameters":{"style":"auto","executor":"native_render_executor","localPath":"/app/storage/assets/anim-job-2fced0c4-3270-4132-8183-0941139a662e","control_count":2,"interactivity":"none","simulation_id":"physics.11.kinematics.projectile_motion","renderer_style":"three_js","durationSeconds":15,"render_manifest":{"jobId":"anim-job-2fced0c4-3270-4132-8183-0941139a662e","request":{"gap":{"topic":"projectile-components","severity":"moderate","error_type":"wrong_assumption","memory_state":"fragile","display_topic":"Projectile 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context.","narration":"Projectile Motion Components"},{"label":"Mistake","visual":"Show the wrong approach and why it seems plausible.","narration":"Horizontal and vertical motions are dependent."},{"label":"Correction","visual":"Show the right approach step by step.","narration":"Projectile horizontal and vertical motions evolve independently."},{"label":"Concept","visual":"Highlight the key formula and the governing relationship.","narration":"projectile. range"}],"title":"Projectile Motion Components","sceneCode":"<!doctype html>\n<html lang=\"en\">\n<head>\n  <meta charset=\"utf-8\"/>\n  <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\"/>\n  <title>Projectile Motion Components</title>\n  <style>\n    :root{--bg:#0e121a;--panel:#1c232e;--line:#303449;--accent:#fc884f;--text:#faf9f8;--muted:#9f9ea1;--blue:#627da5;--green:#8decb0;--red:#df8279;}\n    *{box-sizing:border-box;}\n    body{margin:0;font-family:\"Plus Jakarta Sans\",\"Manrope\",\"Inter\",ui-sans-serif,system-ui,sans-serif;background:radial-gradient(120% 90% at 20% -5%,#1c232e 0%,#0e121a 55%);color:var(--text);}\n    main{min-height:100vh;display:grid;grid-template-columns:minmax(300px,380px) 1fr;}\n    aside{border-right:1px solid var(--line);background:linear-gradient(180deg,rgba(28,35,46,.86),rgba(14,18,26,.94));padding:24px;overflow:auto;backdrop-filter:blur(6px);}\n    section{padding:24px;display:grid;place-items:center;}\n    h1{margin:0 0 10px;font-size:1.65rem;line-height:1.15;}\n    .sub{margin:0 0 16px;color:var(--muted);}\n    .formula{margin:0 0 14px;padding:10px;border:1px solid var(--line);border-radius:10px;background:#11191e;color:var(--accent);font-family:ui-monospace,monospace;font-size:0.9rem;box-shadow:inset 0 0 28px rgba(229,186,103,.08);}\n    .control{display:grid;gap:6px;margin:12px 0;}\n    .control input{width:100%;accent-color:var(--accent);}\n    ul{margin:14px 0 0 18px;padding:0;color:var(--muted);display:grid;gap:6px;}\n    .stage{width:min(1020px,95%);aspect-ratio:16/9;border:1px solid #445862;border-radius:14px;position:relative;overflow:hidden;background:radial-gradient(circle at 50% 38%,#2f4a57,#0f1418 72%);box-shadow:0 18px 60px rgba(0,0,0,.45), inset 0 0 90px rgba(255,255,255,.03);}\n    .stage::before{content:\"\";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.06),transparent 34%);pointer-events:none;}\n    .legend{position:absolute;right:12px;top:12px;padding:8px 10px;border-radius:10px;border:1px solid #465a64;background:rgba(9,14,18,.58);font-size:0.8rem;color:var(--muted);backdrop-filter:blur(4px);}\n    @media(max-width:900px){main{grid-template-columns:1fr;}aside{border-right:0;border-bottom:1px solid var(--line);}}\n  </style>\n</head>\n<body>\n<main>\n  <aside>\n    <h1>Projectile Motion</h1>\n    <p class=\"sub\">Horizontal &amp; vertical motions are INDEPENDENT</p>\n    <p class=\"formula\">vₓ = v₀cos(θ)<br/>vᵧ = v₀sin(θ) − gt</p>\n    <label class=\"control\"><span>Launch angle: <strong id=\"v-angle\">45</strong>°</span><input id=\"c-angle\" type=\"range\" min=\"15\" max=\"75\" step=\"5\" value=\"45\"/></label>\n    <label class=\"control\"><span>Initial speed: <strong id=\"v-speed\">25</strong> m/s</span><input id=\"c-speed\" type=\"range\" min=\"15\" max=\"40\" step=\"1\" value=\"25\"/></label>\n    <label class=\"control\"><span>Gravity: <strong id=\"v-gravity\">9.8</strong> m/s²</span><input id=\"c-gravity\" type=\"range\" min=\"5\" max=\"15\" step=\"0.5\" value=\"9.8\"/></label>\n    <ul>\n      <li><strong>❌ Wrong:</strong> Horizontal &amp; vertical motions affect each other</li>\n      <li><strong>✓ Correct:</strong> They evolve independently with no coupling</li>\n      <li><strong>Why:</strong> Gravity acts only downward; no horizontal force</li>\n      <li><strong>See:</strong> Separate velocity graphs for vₓ &amp; vᵧ</li>\n    </ul>\n  </aside>\n  <section>\n    <div class=\"stage\" id=\"stage\">\n      <div class=\"legend\" id=\"legend\">T: 0.0 s</div>\n      <canvas id=\"sim-cv\" style=\"position:absolute;inset:0;width:100%;height:100%;\"></canvas>\n    </div>\n  </section>\n</main>\n<script>\nconst controls = [\n  {\"key\":\"angle\",\"label\":\"Launch angle\",\"min\":15,\"max\":75,\"step\":5,\"value\":45,\"units\":\"°\"},\n  {\"key\":\"speed\",\"label\":\"Initial speed\",\"min\":15,\"max\":40,\"step\":1,\"value\":25,\"units\":\"m/s\"},\n  {\"key\":\"gravity\",\"label\":\"Gravity\",\"min\":5,\"max\":15,\"step\":0.5,\"value\":9.8,\"units\":\"m/s²\"}\n];\nfor(const c of controls){\n  const inp=document.getElementById('c-'+c.key);\n  const out=document.getElementById('v-'+c.key);\n  inp?.addEventListener('input',()=>{out.textContent=inp.value;window.updateModel?.();});\n}\n(function(){\n  const cv=document.getElementById('sim-cv');\n  const ctx=cv.getContext('2d');\n  function resize(){const 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line\n    ctx.strokeStyle='#303449';ctx.lineWidth=2;\n    ctx.beginPath();ctx.moveTo(originX-20,originY);ctx.lineTo(originX+W*0.55,originY);ctx.stroke();\n    \n    // Axis labels\n    ctx.fillStyle=var('--muted');ctx.font=Math.round(H*0.035)+'px sans-serif';\n    ctx.textAlign='center';ctx.fillText('Range (m)',originX+W*0.275,originY+H*0.06);\n    ctx.save();ctx.translate(originX-H*0.12,originY-H*0.3);ctx.rotate(-Math.PI/2);\n    ctx.fillText('Height (m)',0,0);ctx.restore();\n    \n    // === Layer 2: Trajectory trail ===\n    if(state.trailPoints.length>1){\n      ctx.strokeStyle='rgba(252,136,79,0.4)';ctx.lineWidth=2.5;\n      ctx.beginPath();\n      ctx.moveTo(originX+state.trailPoints[0].x*scaleX,originY-state.trailPoints[0].y*scaleY);\n      for(let i=1;i<state.trailPoints.length;i++){\n        ctx.lineTo(originX+state.trailPoints[i].x*scaleX,originY-state.trailPoints[i].y*scaleY);\n      }\n      ctx.stroke();\n    }\n    \n    // === Layer 3: Projectile & vectors ===\n    const px=originX+state.x*scaleX;\n    const py=originY-state.y*scaleY;\n    \n    // Glow effect\n    glowDot(px,py,6,'rgb(252,136,79)',0.2);\n    \n    // Ball\n    ctx.fillStyle='#fc884f';ctx.beginPath();ctx.arc(px,py,8,0,Math.PI*2);ctx.fill();\n    ctx.strokeStyle='#b56745';ctx.lineWidth=2;ctx.stroke();\n    \n    // Velocity vectors (scaled for visibility)\n    const vScale=W*0.12;\n    const vxEnd=px+state.vx*vScale;\n    const vyEnd=py-state.vy*vScale;\n    \n    // Horizontal component (red)\n    arrow(px,py,vxEnd,py,'#df8279',2.5);\n    ctx.fillStyle='#df8279';ctx.font=Math.round(H*0.03)+'px sans-serif';\n    ctx.textAlign='left';ctx.fillText('vₓ',vxEnd+6,py-3);\n    \n    // Vertical component (blue)\n    arrow(px,py,px,vyEnd,'#627da5',2.5);\n    ctx.fillStyle='#627da5';\n    ctx.textAlign='right';ctx.fillText('vᵧ',px-12,vyEnd-4);\n    \n    // Net velocity (yellow dashed)\n    ctx.strokeStyle='#f0c674';ctx.lineWidth=2;ctx.setLineDash([5,5]);\n    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