Work Problem: 3 kg Brick Falling 15 m - 441 J?

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Homework Statement


How much work does gravity do when a 3 kg brick falls 15 m?

Homework Equations


W=Fx?

The Attempt at a Solution


I transferred the mass of the brick to weight (gravitational force) and got 29.4. I used this number for the force and the 15 for distance, or x. Does 441 J make sense as the amount of work in this situation?
 
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Your attempt at this is correct. when an object falls, some of the gravitational energy is converted to other forms such as kinetic energy. the amount lost is the amount of work done by gravity.