A flare fired from the bottom of a gorge is visible only when the flare is above the rim. If it is fired with an initial velocity of $112 \mathrm { ft } / \mathrm { sec }$, and the gorge is $192 \mathrm { ft }$ deep, during what interval can the flare be seen?
$$\left( h = - 16 t ^ { 2 } + v _ { 0 } t + h _ { 0 } \right)$$
A) $9

Question

A flare fired from the bottom of a gorge is visible only when the flare is above the rim. If it is fired with an initial velocity of $112 \mathrm { ft } / \mathrm { sec }$, and the gorge is $192 \mathrm { ft }$ deep, during what interval can the flare be seen?
$$\left( h = - 16 t ^ { 2 } + v _ { 0 } t + h _ { 0 } \right)$$
A) $9 < t < 10$
B) $6 < t < 7$
C) $3 < t < 4$
D) $0 < t < 3$

Quizplus · Accepted Answer

The Answer of A flare fired from the bottom of a gorge is visible only when the flare is above the rim. If it is fired with an initial velocity of $112 \mathrm { ft } / \mathrm { sec }$, and the gorge is $192 \mathrm { ft }$ deep, during what interval can the flare be seen?
$$\left( h = - 16 t ^ { 2 } + v _ { 0 } t + h _ { 0 } \right)$$
A) $9 < t < 10$
B) $6 < t < 7$
C) $3 < t < 4$
D) $0 < t < 3$

A Flare Fired from the Bottom of a Gorge Is 112ft/sec112 \mathrm { ft } / \mathrm { sec }112ft/sec

A Flare Fired from the Bottom of a Gorge Is $112 \mathrm { ft } / \mathrm { sec }$