Question 729387
Just substitute {{{t=3}}} into {{{h(t) = 360 – 16t^2}}} to get
{{{h(3) = 360 – 16*3^2}}} --> {{{h(3) = 360 – 16*9}}} --> {{{h(3) = 360 – 144}}} --> {{{highlight(h(3) = 216)}}}
Three seconds after being dropped the ball is 216 feet above the ground.