Kinetic Energy (Ek) =
[tex]m \times {v}^{2} \div 2[/tex]
Torricelli's Equation
g earth = 10m/s^2
[tex] {v}^{2} = {vo}^{2} + 2g \times delta(s) \\ {v}^{2} = 0 + 2 \times 10 \times 12 \\ {v}^{2} = 240m/s[/tex]
120g = 0.12 kg
Ek = 0.12 x 240/2
Ek = 28.8/2
Ek = 14.4 J
