Question 370223
S(t)=height.  t = time in seconds.  We want to know height at 1 second.  SO plug in 1 for t. and solve for S(t).
S(1)=-16(1)^2-32(1)+128=80.  SO at 1 second the wrench is at a height of 80ft.

The wrench will be at the ground at 0 ft.  So set the equation equal to 0 and solve for t.

S(t)=-16t^2-32t+128=0
-16(t^2+2t-8)=0
-16(t-2)(t+4)=0
t=2, t=-4  Time can't be negative...so at t=2 seconds the wrench has reached the ground.