A set of fireworks mortar shells is launched from the staging platform at 100 ft/sec from an initial height of 8 ft above the ground. The height of the fireworks, h ( t ) , can be modeled by h ( t ) = − 16 t 2 + 100 t + 8 , ? where t is the time in seconds after launch. ?( See Example 4 .) a .What is the maximum height that the shells can reach before exploding? b .For how many seconds after launch would the fuses need to be set so that the mortar shells would in fact explode at the maximum height?
A set of fireworks mortar shells is launched from the staging platform at 100 ft/sec from an initial height of 8 ft above the ground. The height of the fireworks, h ( t ) , can be modeled by h ( t ) = − 16 t 2 + 100 t + 8 , ? where t is the time in seconds after launch. ?( See Example 4 .) a .What is the maximum height that the shells can reach before exploding? b .For how many seconds after launch would the fuses need to be set so that the mortar shells would in fact explode at the maximum height?
Solution Summary: The author calculates the maximum height of the shells that can reach before exploding by using the ti-83 calculator.
A set of fireworks mortar shells is launched from the staging platform at 100 ft/sec from an initial height of 8 ft above the ground. The height of the fireworks,
h
(
t
)
, can be modeled by
h
(
t
)
=
−
16
t
2
+
100
t
+
8
, ? where t is the time in seconds after launch. ?(See Example 4.)
a.What is the maximum height that the shells can reach before exploding?
b.For how many seconds after launch would the fuses need to be set so that the mortar shells would in fact explode at the maximum height?
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ises
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96
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