For the motion of a stone

MATHEMATICS · Subjective · CBSE · Mathematics · Quadratic Equations · Quadratic Equations

Problem

For the motion of a stone, the height above ground (in metres) after

t

seconds is

h(t)= -4t^{2}+16t+12

. Solving

h(t)=0

gives

t=-1

and

t=3

. Which value of

t

is physically meaningful? Give a reason for your choice.