Cannonball's orbit

A cannonball was fired from the surface of Earth with a velocity of \(12kms^{-1}\) perpendicular to the surface of Earth.  If \(e_1\) is the eccentricity of the conic section formed by its orbit. Find \(\lfloor 10e_1\rfloor\) **Assume:** - Mass of Earth = \(5.972\times 10^{24} kg\) - Radius of Earth =\(6.371\times 10^6 m\) - \(G=6.6743\times 10^{-11}Nm^2kg^{-2}\) - Only gravitational forces are involved