Item 13 The polynomial −16t2+v0t+s0 represents the height (in feet) of an object, where v0 is the initial vertical velocity (in feet per second), s0 is the initial height of the object (in feet), and t is the time (in seconds). Write a polynomial that represents the height of the object. Then find the height of the object after 1 second.

You bounce a tennis ball on a racket.