Asquirrel has x-and y-coordinates (1.1 m, 3.4 m) at time t1= 0 and coordinates (5.3 m, -0.5 m) at time t2= 3.0 s. for this time interval, find (a)the components of the average velocity

In position #1, at time t₁ = 0, the coordinates are (1.1 m, 3.4 m).
That is,
x₁ = 1.1 m, y₁ = 3.4 m.

In position #2, at time t₂ = 3.0 s, the coordinates are (5.3 m, -0.5 m).
That is,
x₂ = 5.3 m, y₂ = -0.5 m.

The x-component of the average velocity is
Vx = (x₂ - x₁)/(t₂ - t₁)
     = (5.3 - 1.1 m)/(3 - 0 s)
     = 1.4 m/s

Similarly, the y-component of the average velocity is
Vy = (-0.5 - 3.4)/3
     = -1.3 m/s

Answer
The x and y components of the average velocity are 1.4 m/s and -1.3 m/s respectively.

If there was no gravity then their would be no downword force on the football to have it return the the grownd, and if there was no friction (mainly air friction) then there would be no opposing force the stop the ball from moving through the air allowing the ball to travle ∞.