Answer:
230 ft is the height of the object after 5 seconds
Step-by-step explanation:
As per the statement:
If an object is projected upward with an initial velocity of 126 ft per sec.
The height h after t seconds is given by:
[tex]h(t) = -16t^2+126t[/tex]
We have to find the height of the object after 5 seconds.
At t = 5 seconds
[tex]h(5) = -16(5)^2+126(5)[/tex]
⇒[tex]h(5) = -16 \cdot 25+630[/tex]
⇒[tex]h(5) = -400+630[/tex]
Simplify:
h(5) = 230 ft
Therefore, the height of the object after 5 seconds is, 230 ft
