#### Answer

The Function would be s(t)=-4.9$t^{2}$+15t+5.
If you plug in t=1 sec, the s(1)=15.1 ft

#### Work Step by Step

The function is based on a real world example of projectile motion where the function s represents the height of the ball in ft with respect to time in seconds.
The input value is the time at which you want to find the height of ball. The output s(t) represents the height of the ball as when t=1 seconds, the height is 15.1 ft with respect to ground.