Ako trebate pomoć s nekim specifičnim zadatkom iz fizike za 7. razred, slobodno ga napišite u komentarima, a ja ću vam napisati rješenje s objašnjenjem!
Prva lekcija uči nas da svaka veličina ima svoju oznaku, brojčanu vrijednost i mjernu jedinicu. Najvažnije je znati pretvarati jedinice (mili, centi, deci, kilo).
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: A toy car of mass 3 kg is moving at a speed of 4 m/s. Calculate its kinetic energy.
The curator pointed to the sea. "In 1806, the cannon fired a cannonball straight toward that enemy ship 600 meters away. The ball flew at 120 m/s. How long did it take to hit the ship?" fizika 7 razred zadaci i rjesenja top
A car travels from city A to city B at an average speed of 60 km/h. The distance between the two cities is 240 km. How long does the trip take?
Dizalica podigne teret mase 500 kg na visinu 8 m za 20 sekundi. Koliku snagu razvija? (Snaga = rad/vrijeme) Ako trebate pomoć s nekim specifičnim zadatkom iz
Force = weight = (50 \cdot 10 = 500\ \textN) Area in m²: (2\ \textcm^2 = 0.0002\ \textm^2) [ p = \frac5000.0002 = 2,500,000\ \textPa = 2.5\ \textMPa ] (Very high – that’s why heels damage floors.)
The trip takes 4 hours.