I Rješenja - Fizika 7 Razred Zadaci

[ v = \fracst = \frac120 , \textkm2 , \texth = 60 , \textkm/h ] In m/s: [ 60 , \textkm/h = \frac603.6 = 16.67 , \textm/s ] Problem 2 A cyclist rides at 5 m/s for 20 seconds. How far does he go?

[ \rho = \fracmV = \frac240 , \textg300 , \textcm^3 = 0.8 , \textg/cm^3 ] In kg/m³: [ 0.8 , \textg/cm^3 = 0.8 \times 1000 = 800 , \textkg/m^3 ] Problem 6 Iron has density 7800 kg/m³. What is the mass of 0.05 m³ of iron? fizika 7 razred zadaci i rješenja

[ p = \fracFA = \frac500 , \textN0.25 , \textm^2 = 2000 , \textPa ] Problem 8 Calculate the water pressure at 2 m depth. (( \rho_\textwater = 1000 , \textkg/m^3, g = 10 , \textN/kg )) [ v = \fracst = \frac120 , \textkm2