2. If rain is falling vertically downward, and you are running for shelter, should you hold your umbrella vertically, tilted forward, or tilted backward to keep the driest? Please explain.

Tilted forward to keep the driest.

Explanation:

The rain is falling vertically so there is no wind. In these circumstances the umbrella should be tilted vertically forward.

The situation is the same as if you would stand still and the rain would come under an angle from the front.

my favorite animal is a dog lol basic