Unity Wind Physics

Hi, so in my game you are a grenade trying to cross a road without getting hit by a car. So what I’m curious about is how to implement wind. For example if, a car passes by really close to the grenade, the grenade moves a bit because of the car. Is this something id have to code myself? If so how? Is it already built into unity?

Thanks in advance!

You try to change the gravity so is looks like the wind.