Fizika 7 Razred Zadaci I Rješenja Now

[ a = \fracFm = \frac20 , \textN4 , \textkg = 5 , \textm/s^2 ] 3. Density (Gustoća) Key formula: ( \rho = \fracmV ) Unit: ( \textkg/m^3 ) or ( \textg/cm^3 ) Conversion: ( 1 , \textg/cm^3 = 1000 , \textkg/m^3 ) Problem 5 A wooden block has mass 240 g and volume 300 cm³. Calculate density in g/cm³ and kg/m³.

[ F_g = m \cdot g = 5 , \textkg \times 10 , \textN/kg = 50 , \textN ] Problem 4 A force of 20 N acts on a 4 kg object. What is its acceleration? fizika 7 razred zadaci i rješenja

[ m = \rho \cdot V = 7800 , \textkg/m^3 \times 0.05 , \textm^3 = 390 , \textkg ] 4. Pressure (Tlak) Key formula: ( p = \fracFA ) Unit: Pascal (Pa) = ( \textN/m^2 ) Pressure in liquids: ( p = \rho \cdot g \cdot h ) Problem 7 A 500 N weight stands on a box with base area 0.25 m². What pressure does it exert? [ a = \fracFm = \frac20 , \textN4