{
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  "date_created": "2026-03-02T18:01:24.959000Z",
  "date_modified": "2026-03-02T18:01:24.959000Z",
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  "record": {
    "abstract": "We discuss how a class of difficult kinematic problems can play an important\nrole in an introductory course in stimulating students\u0027 reasoning on more\ncomplex physical situations. The problems presented here have an elementary\nanalysis once certain symmetry features of the motion are revealed. We also\nexplore some unexpected directions these problems lead us.",
    "arxiv_id": "physics/9905018",
    "authors": [
      "Oscar Bolina"
    ],
    "categories": [
      "physics.ed-ph"
    ],
    "doi": "10.1088/0031-9120/34/3/310",
    "journal_ref": "Physics Education 34 N.3 (1999) pp.148-149",
    "title": "Difficult Problems Having Easy Solutions",
    "url": "https://arxiv.org/abs/physics/9905018"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c961777a-1d7c-4356-a936-9b663d76e84f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}