The formula for calculating work is W = F x d, where W represents work, F represents force, and d represents distance. This formula is used to calculate the amount of work done on an object.
The force of a falling object can be calculated using the formula F = m x a, where F represents force, m represents mass, and a represents acceleration. In this problem, the mass of the brick is 3 kg and the acceleration due to gravity is approximately 9.8 m/s^2.
The unit of measurement for work is joules (J). In this problem, the work done on the 3 kg brick is 441 J.
The distance an object falls can be calculated using the formula d = 1/2 x a x t^2, where d represents distance, a represents acceleration, and t represents time. In this problem, the distance the brick falls is 15 m.
The mass of an object does not directly affect the work done on it. However, the force required to move the object over a certain distance does increase with mass, and thus more work is required to move a heavier object. In this problem, the 3 kg brick requires 441 J of work to be done on it as it falls 15 m.