A body weighing 800 g falls to the ground from a height of 50 cm. What work does gravity do in this case?

Given m = 800g and h = 50 cm, and knowing the acceleration of gravity g = 10m / s ^ 2, we translate into SI m = 800g = 0.8 kg, h = 50cm = 0.5m and based on the formula A = FS, work is equal to the product of force and distance traveled, in this case the force is equal to gravity F = F tension, F = mg, and the distance traveled is equal to height S = h,
We get A = mgh, A = 0.8 kg * 10m / s ^ 2 * 0.5 m = 4 J
Answer: A = 4 J