The tangerine's average speed is greatest at window 3, then window 2, and slowest at window 1.
Work Step by Step
After being thrown in the air, the only force acting on the tangerine is the force of gravity puling it downward. Being an unbalanced force, there is a constant acceleration downwards, slowing the tangerine down the longer it travels. The tangerine travels through the 3rd window first, then to the 2nd and 1st window with progressively slower speeds.