An object is launched at 14.7 meters per second from an 88.2 meter tall platform. The equation for the object's height (ℎ)
(
h
)
at time
()
(
t
)
seconds after launch is
ℎ()=−4.92+14.7+88.2
h
(
t
)
=
−
4.9
t
2
+
14.7
t
+
88.2
. Assuming
=0
t
=
0
is when the object is launched and
ℎ=0
h
=
0
is when the object is level with the ground, when does the object strike the ground?