Fizyka zadania. na zdj. 2 gim.

2 zdjecie 1. mgh=mv2/2 gh=v2/2 v2/2/g = h h=36m/s/2/10N/kg h=1,8m 2. mgh=mv2/2 gh=v2/2 h=v2/2/g h=100m/s/2/10N/kg h=5m 3.Ep= mgh = 1000kg * 10N/kg *600m = 6000000J=6 MJ Ek= mv2/2 = 1000 kg * 200m/s /2 = 200000 J/2= 100000J =100KJ 4. Ep=mgh =10kg * 10N/kg *50m = 5000J =5KJ 5. W= Ep= mgh = 5kg * 10N/kg * 0,4m = 20J 6.Ep= mgh = 3000kg * 10N/kg * 1,8m = 54000J P= W/t = 54000J/21600s = 2,5W 1 zdjecie: 6. Ep= mgh = 0,15kg*10N/kg*2m=3J 7.Ep= mgh= 0,2kg * 10N/kg *0,2m= 0,4J 8.Ep=mgh Ep/h = mg Ep/h/g = m m = 30J / 2m/ 10N/kg = 1,5kg 9.Ep=mgh Ep/m= gh Ep/m/g=h h=60J/0,3kg/10N/kg = 20m 10. mgh=mv2/2 v2/2=gh v2= 2gh v = Г2gh v=Г2*10N/kg*5m v=Г100m/s v=10m/s 11. mgh=mv2/2 gh=v2/2 h= v2/2/g h=4m/s/2/10N/kg h=0,2m 12. mgh=mv2/2 h=v2/2/g h=16m/s/2/10N/kg h=0,8m 13. mgh=mv2/2 gh=v2/2 2gh=v2 v=Г2gh v=Г2*10N/kg*6m v=Г120m/s v=11m/s