SOLUTION: when an object is dropped from a building, the height of the object above the ground is given by the formula h=-4.9x to the 2nd power + 44.1 where h is the meters and x is the time
Question 1139766: when an object is dropped from a building, the height of the object above the ground is given by the formula h=-4.9x to the 2nd power + 44.1 where h is the meters and x is the time in seconds. How long does it take for the object to reach the ground
h(t) =
The object will hit the ground exactly and precisely at the time moment "t", when h(t) = 0, or, equivalently,
= 0.
Simplify and solve for "t" :
= = 9
t = = 3.
ANSWER. In 3 seconds.