The height of a drone is measured in feet

MATHEMATICS · Subjective · AP · Calculus AB · Contextual Applications of Differentiation · Contextual Applications of Differentiation

Problem

The height

h(t)

of a drone is measured in feet, where

t

is the time in seconds after launch. Given

h'(1)=15

and

h'(4)=8

, determine at which of the two times the drone is ascending more rapidly and state the corresponding instantaneous rate with units.