Fizika 7 Razred Zadaci I Rjesenja Top Jun 2026

A 50 kg woman stands on one heel (area = 2 cm²). Calculate pressure on the ground. ((g = 10\ \textm/s^2))

Force to lift = weight = (200 \cdot 10 = 2000\ \textN) Work: (W = F \cdot s = 2000\ \textN \cdot 5\ \textm = 10,000\ \textJ) Power: (P = \frac10,000\ \textJ10\ \texts = 1000\ \textW = 1\ \textkW)

A book with a mass of 2 kg is placed on a table. What is the force exerted by the book on the table?

Ako računate pritisak, krajnji rezultat mora biti u Pascalima ( ). Ako dobijete nešto drugo, provjerite račun. ✅ Zaključak

F=G=m⋅g=300 kg⋅10 N/kg=3000 Ncap F equals cap G equals m center dot g equals 300 kg center dot 10 N/kg equals 3000 N 2. Korak: Izračunavanje mehaničkog rada Uvrštavamo silu i pređeni put (visinu ) u formulu za rad: fizika 7 razred zadaci i rjesenja top

Ovo je tema gdje većina učenika "zapne". Zapamti formulu: $\rho = \fracmV$.

Učimo o težini tijela ($G = m \cdot g$) i silama koje djeluju na predmete.

W=F⋅s=3000 N⋅10 m=30000 J=30 kJcap W equals cap F center dot s equals 3000 N center dot 10 m equals 30000 J equals 30 kJ 3. Korak: Izračunavanje snage

Problems can be either conceptual, testing your understanding of principles, or numerical, testing your ability to apply formulas. Let's look at examples of both. A 50 kg woman stands on one heel (area = 2 cm²)

A cannonball travels 600 m at a speed of 120 m/s. Calculate the time of flight.

A 5 kg box is pushed with a force of 20 N. What is its acceleration?

The cannon rested on two wooden wheels, each touching the ground with an area of 0.1 m². Marko calculated the pressure on the ground.

( m = 300 \text kg ), ( g = 10 \text N/kg ). Find weight ( G ). What is the force exerted by the book on the table

F=m⋅g=200⋅10=2000 Ncap F equals m center dot g equals 200 center dot 10 equals 2000 N

Želite li još ovakvih zadataka iz fizike za 7. razred? Javite u komentarima koje poglavlje vam najteže pada – sljedeći put donosimo zadatke isključivo iz tog područja!

Za detaljne upute i rješenja, najbolje je koristiti provjerene digitalne materijale: IZZI - Fizika 7

Za vježbu možeš koristiti interaktivne platforme i zbirke: Zadaci - Gustoća - stem.ba