phy sci

Which has more kinetic energy: a 0.0011-kg bullet traveling at 406 m/s or a 5.4  107-kg ocean liner traveling at 15 m/s (29 knots)?   

I would say the ocean liner has more energy.  I can stop a bullet with my chest – not that I would want to – but an immense ocean liner would crush me like stepping on an ant.  I know that energy is mass times velocity squared, but I'm unable to calculate the energy values because I don't know what "5.4  107-kg" means. 

_.

Well.....just think about it....if the bullet hit the liner, would it knock the ship backwards....or not?

KE = 1/2 m v²

bullet_ke = 1/2 (.0011) (406)²         joules

liner_ke   = 1/2 (5.4 * 10⁷) (15)²   joules                  calculate to find the greater.....