Solve the Problem $t$ Seconds Is Given By $h = - 9.8 \mathrm { t } ^ { 2 } + 78.4 \mathrm { t }$

question 161

Multiple Choice

Solve the problem.
-If a rocket is propelled upward from ground level, its height in meters after $t$ seconds is given by $h = - 9.8 \mathrm { t } ^ { 2 } + 78.4 \mathrm { t }$ . During what interval of time will the rocket be higher than $147 \mathrm {~m}$ ?

• A) \(0 < t < 3\)
• B) \(3 < t < 5\)
• C) \(5 < t < 6\)
• D) \(6 < t < 8\)

---

Definitions:

Chemical Activity

Relates to the rate at which a chemical substance undergoes a reaction, typically influenced by conditions like temperature and pressure.

Hemostatic

Pertaining to the stopping or controlling of bleeding.

Blood Clot

A blood clot is a gel-like mass formed by platelets and fibrin in the blood to stop bleeding and is crucial in repair processes, but can be harmful when formed inappropriately in veins or arteries.

Bleeding

The act of losing blood from the circulatory system due to injury or illness.