How to make an object jump?

Hi, I know this is kind of a newbie question but I wanted to know how I can make an object not controlled by the player jump? I am using the A* pathfinding and I was going to place a box collider in front of blocks so the enemy would know when to jump. I think the only thing I need to do is just make it move up for maybe a second and then let gravity move it down.

Is there a simple way to just make it move up for maybe a second?