Respuesta :
Ec =mv^2/2
Ec =200gr(300m/s)^2/2
Ec =(0,2kgr*90000m^2/s^2)/2 =9*10^3julios masa =200/1000 =0,2kgr
Ec =200gr(300m/s)^2/2
Ec =(0,2kgr*90000m^2/s^2)/2 =9*10^3julios masa =200/1000 =0,2kgr