the function y= -16t^2 + 248, models the hight y in feet of a stone t seconds after it dropped from the edge of a vertical cliff. How long will it take the stone to hit the ground?

Step-by-step explanation:

When (t =0)

Height of cliff = 248 feet = 75.5m

Using Newton's equations of motion:

75.5 = 0 * t + 4.9 * t^2

Solving further :

the correct answer is the second option

sorry can't

step-by-step explanation:

i googled though and something came up but it was in science langueage not common english sooo