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An object weighing 12 pounds (mass) falls from a height of 4 feet, what is the speed at which the object falls and what is the force of the impact (it would be hitting a hard concrete or granite floor). So how fast is it falling, and how hard does it hit the floor?

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This problem is a physics type of problem related to free-falling bodies.

As to answer the velocity, we will use the formula:
vf^2 = vi^2 + 2*g*d

Where vf ...

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