Question

a raindrop falls close to a building. what is the correct relationship of forces acting between the raindrop and the building?

Explanation:

Step1: Recall gravitational and electrostatic forces

Gravity acts down - ward on the raindrop. There is no significant electrostatic or other direct forces between a raindrop and a building at a normal distance.

Step2: Analyze force directions

The main force on the raindrop is gravity pulling it downwards. There is no significant horizontal force between the raindrop and the building.

Answer:

The first option (the one with a downward - pointing arrow for gravity and no horizontal force between the raindrop and the building) is correct.