A 12-Kg Mass Is Projected from Ground Level with a Velocity

A 1.2-kg mass is projected from ground level with a velocity of 30 m/s at some unknown angle above the horizontal. A short time after being projected, the mass barely clears a 16-m tall fence. Disregard air resistance and assume the ground is level. What is the kinetic energy of the mass as it clears the fence?

A) 0.35 kJ
B) 0.73 kJ
C) 0.40 kJ
D) 0.68 kJ
E) 0.19 kJ

Correct Answer:

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