The car produces 412.5 KG per m/s
I think it's the last one
It take 365 1/4 days basically, one year.
in the case of beryllium, a light metal, only the beryllium-9 isotope is stable with its 9 nucleons (i.e. 4 protons and 5 neutrons)
Hope this helps so sorry if it does not help
