Question

an object dropped from a height of 210ft will fall according to the equation h(t) =210-16t^2. how long will it take the object to reach the ground

Answer 1

`√(210/16)`

Explanation:

By saying reach the ground, it means the altitude w
`\sqrt{}`ill be zero, so the equation will be: 210 - 16t^2 = 0

210 = 16t^2, t =
`√(210/16)`