{"id":"hs-explain-newtons-third-law","audience":"high-school","category":"explaining","technique":"audience","title":"Get Newton's third law explained at your level","free":false,"task":"In 9th grade physics you get Newton's third law, but one thing bugs you: if every push comes with an equal and opposite push, why does anything move at all? Get an explanation pitched at you: at most 5 sentences, plain text, using the skateboard lab from class as its only example, with no equations and none of the terms you haven't learned yet (vector, net force, free-body diagram, momentum). It must answer your exact question and also explain why Marcus rolled slower than you.","materialLabel":"Your physics notes (attached to your prompt automatically)","material":"PHYSICS 9 (Ms. Tran) - Newton's laws - my notes\n\n1st law: things keep doing what they're doing (resting or moving) unless a force acts on them\n2nd law: bigger force = bigger change in motion. Heavier things are harder to speed up.\n3rd law: for every action there is an equal and opposite reaction. Forces come in pairs.\n - ex: you push on a wall, the wall pushes back on you just as hard\n\nSKATEBOARD LAB (Tues)\nMarcus and I stood on skateboards facing each other. I pushed Marcus. We BOTH rolled backward, away from each other. Marcus is heavier and he rolled slower than me.\n\nWhat I don't get: if my push on Marcus and his push on me are equal and opposite, don't they cancel out?? So why did we move at all?\n\nTextbook (ch 4) words I haven't gotten to yet: vector, net force, free-body diagram, momentum\n\nLab partner Dev: \"they cancel out but you move because of friction\"  <- not sure if that's right\n\nMs. Tran: we'll do vectors + net force in Unit 5. Quiz on ch 4 next Wednesday.","rules":[{"type":"maxSentences","max":5},{"type":"plainText"}],"mistakes":[{"title":"Asking for the general topic","why":"\"Explain Newton's third law\" gets a textbook overview that may never touch the one thing you're stuck on.","fix":"Quote your question: \"If the pushes are equal and opposite, why don't they cancel out?\"","checks":["r0"]},{"title":"Not saying what you know","why":"The AI explains at a textbook level, with equations and terms from units you haven't reached.","fix":"Add: \"I'm in 9th grade. No equations, and don't use vector, net force, free-body diagram or momentum.\"","checks":["r1"]},{"title":"Getting a new example","why":"AI reaches for rockets or a horse and cart, when the lab you actually did would make it click.","fix":"Add: \"Use only the skateboard lab with Marcus as the example.\"","checks":["r1"]},{"title":"Leaving out the second puzzle","why":"The AI answers the main question and skips the detail from your lab that would make the whole idea click.","fix":"Add: \"Also explain why Marcus, who is heavier, rolled slower than me.\"","checks":["r2"]},{"title":"No length limit","why":"AI writes a long answer with headings and bullet points, and the key idea gets buried.","fix":"Add: \"At most 5 short sentences, plain text.\"","checks":["maxSentences","plainText"]}],"promptHints":[{"label":"Asks your exact question","patterns":["cancel","why.{0,30}move","my question"]},{"label":"Says your level","patterns":["9th","ninth","haven't learned","beginner","my level"]},{"label":"Bans the terms you don't know","patterns":["vector","net force","equation","formula"]},{"label":"Uses your own example","patterns":["skateboard","marcus","lab"]},{"label":"Sets a length","patterns":["\\d+\\s*sentences?","(three|four|five) sentences","short"]}],"hint":"A good explanation starts from what you already know and what confuses you. Tell the AI your exact question, your level, the words you haven't learned yet, and the example you'd recognize.","rubricLabels":["Directly answers the student's question: the two pushes act on different people (one on Marcus, one on the student), so they don't cancel each other out","Uses the skateboard lab with Marcus as its only example (no rockets, swimming, walls or other new examples), with no equations and none of these terms: vector, net force, free-body diagram, momentum","Explains why Marcus rolled slower: the pushes were the same size, but he is heavier, so the same push changes his motion less (heavier things are harder to speed up)"]}