MATH 1314 56 Sec. 3.1 (2) In-Class Worksheet Please show your work in the space provided. Name Nathan Tipper Solve the problem. 1 A fireworks mortar is launched straight upward from a pool deck platform 4 m off the 1) ground at an initial velocity of 61 m/sec. The height of the mortar can be modeled by h(0= -4.912 + 61t + 4, where h(t) is the height in meters and t is the time in seconds after launch. What is the maximum height? Round to the nearest meter. A) 4 m B) 6 m C) 194 m D) 237 m y - 4. 9 1 ) + 6 1( ) + 4 2) A model rocket is launched from a raised platform at a speed of 112 feet per second. Its 2 ) height in feet is given by h(t) = -16t2 + 112t + 20 (t= seconds after launch). After how many seconds does the object reach its maximum height? A) 3.5 seconds B) 1.75 seconds C) 5.5 seconds D) 20 seconds