Understanding the Concepts

* Work: Work is done when a force causes an object to move a certain distance. The formula for work is:

* Work (W) = Force (F) * Distance (d) * cos(theta)

* Where theta is the angle between the force and the direction of motion.

* Gravity: Gravity is a force that pulls objects towards the center of the Earth.

* Weight: Weight is the force of gravity acting on an object's mass.

Applying the Concepts

1. Force: The force acting on the object is its weight, which is 75 N.

2. Distance: The object falls 28 m.

3. Angle: The force of gravity acts straight down, and the object falls straight down. So, the angle between the force and the direction of motion is 0 degrees. cos(0) = 1.

Calculation

* Work (W) = Force (F) * Distance (d) * cos(theta)

* W = 75 N * 28 m * 1

* W = 2100 Joules (J)

Answer: Gravity does 2100 Joules of work on the object as it falls.