13. From what height above the ground was it released? a. 12 m b. 18 m...

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Answer 1

Answer #1

Here we apply conservation of energy equation

That implies, Potential energy, Ui = Kinetic energy KEf

Therefore, m*g*h = 0.5*m*v²

So, height, h = 312.5/9.81 = 32 m (approximately)

Answer 2

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