K= 1/2(6.6*10 ^2 kg)(2.11*10^4m/s)^2

K = 146,919,300,000

K= 1/2(6.6*10^2kg)(2.11*10^4m/s)^2

$K=6963000 \frac{kgm}{s^{2} } \times \frac{kN}{1000\frac{kgm}{s^{2} } }$

K = 6963 kN

K= 1/2(6.6*10^2kg)(2.11*10^4m/s)^2

Solve for K

see: http://web2.0calc.com/questions/k-1-2-6-6-10-2-kg-2-11-10-4m-s-2_1