Автомобиль движется с ускорением а = 2 м/с2 под действием двух сил: силы тяги двигателя F1 = 10 кН и силы сопротивления движению F2 = 4 кН

You must wash hands befor eatyou must wash hands
you must wash hands and fase before you go to bed
you must firstly think and then speak 
say goodnight befor you go to bed
you must do homework first and then you can play
you must think before write