Derivatives · Exercise 52

Explain the functions in words. The height, $s,$ of a projectile after $t$ seconds is given by $s\left(t\right)=-16t^2+80t.$

$s^{\prime }\left(2\right)=16$

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Precalculus 2e · §12.4 Derivatives · Exercise 52