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ENERGIJA

ENERGIJA. Zgledi reševanja nalog. Naloga 1. Kolikšna je kinetična energija ptice z maso 3 kg in hitrostjo 5 m/s?. Naloga 2. Kolikšna je potencialna energija modelčka letala z maso 3 kg na višini 20 m?. Naloga 3. Potencialna energija telesa z maso 2,5 kg je 200 J.

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ENERGIJA

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  1. ENERGIJA Zgledi reševanja nalog

  2. Naloga 1 • Kolikšna je kinetična energija ptice z maso 3 kg in hitrostjo 5 m/s?

  3. Naloga 2 • Kolikšna je potencialna energija modelčka letala z maso 3 kg na višini 20 m?

  4. Naloga 3 • Potencialna energija telesa z maso 2,5 kg je 200 J. • Na kolikšni višini je telo?

  5. Naloga 4 • Potencialna energija telesa se poveča za 40 J, če ga dvignemo za 200 m. • Kolikšna je masa telesa?

  6. Naloga 5 • Kovinska kocka, ki se giblje s hitrostjo 12 m/s ima kinetično energijo 288 J. • Kolikšna je masa kocke?

  7. Naloga 6 • Začetna hitrost kamna z maso 0,4 kg je 1 m/s, končna hitrost pa 2 m/s? • Koliko dela je prejel kamen?

  8. Naloga 7 • Žerjav prestavi 5 ton težak tram z višine 10 m na višino 18 m. • Koliko dela opravil žerjav? • Koliko dela je prejel tram?

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