A 2-kg bowling ball is 2.5 meter off the ground on a post when it falls. Just before it reaches the ground, it is traveling 7 m/s. Assuming that there is no air resistance, which staement is true?

A the mechanical energy is conserved.
B the initial potential energy is less than the final kinetic energy.
C the mechanical energy is not conserved.
D the intial potential energy is greater than the final kinetic energy

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