Understanding the Concepts

* Work: Work is done when a force causes an object to move a certain distance. It's calculated by: Work (W) = Force (F) × Distance (d)

* Force of Gravity: The ball's weight (30 newtons) represents the force of gravity acting on it.

* Displacement: The ball moves 2 meters vertically.

Calculation

1. Identify the Force: The force acting on the ball is its weight, 30 N.

2. Identify the Displacement: The ball moves 2 meters vertically.

3. Calculate Work:

* W = F × d

* W = 30 N × 2 m

* W = 60 Joules (J)

Therefore, 60 Joules of work have been done on the ball.

Important Note: This calculation assumes that the only force acting on the ball is gravity. In reality, there might be other forces like air resistance, but for this simplified example, we're focusing on the work done against gravity.