The rocket was on a launch pad, how high was the launch pad?

Answer 1

some information seems to be missing

in general the standard equation for height of anything is

h(t) = -16t^2 + vot + ho where vo is the initial velocity and ho is the initial height (how high the launch pad is)

if you know vo and h at time t, plug in those values into the equation and solve for ho

this equation is in terms of feet

if the measurements are in meters use the equation h(t)=-4.9t^2 + vot +ho

the squared term is the effect of gravity