Answer:
7.34 meters
Step-by-step explanation:
If the entire Kinetic energy is converted to Potential energy
1/2 mv^2 = mgh didvide both sides by ' m '
1/2 v^2 = gh solve for 'h'
1/2 v^2 / g = h plug in the given values , g = 9.81 m/s^2
1/2 (12)^2 / 9.81 = h = 7.34 m