Question

Same question qith different parts

f A model rocket is fired vertically upward from rest. Its acceleration for the first three seconds is atet) sat, at which time the fuel is exhausted and it becomes a nds later, the rocket's parachute opens, and the (downward) velocity slows inearty to-13 n/s in S s. The rocket then "hets" to the ground at that rate freely "Talling" body. Thirteer (a) Determine the position function s and the velocity function v (for all times t). rosts3 f 16 21 st) - if t 21 Sketch the graph of v 1000 800 600 400 200 200 100 -100 5 10 15 20 2530 200 100 100 15 20 25 30 - 100 100 200 Sketch the graph of s. 5 10 15 20 25 30t 200 -200 -400 -600 -800 -1000 100 10\ 15 2 -100 1000 800 600 400 200 1000 800 400 200 5 10 15 2025 30 5 10 15 20 25 30 (b) At what time does the rocket reach its maximum height? What is that height? (Round your answer to the nearest integer.) ft (c) At what time does the rocket land? (Round your answer to one decimal place.)

Answer 1

0-3 사 3-16 de-ㄒㄧ子atg. v- 1-32-18 d 243 V-243 )-32.18 Va 243 32.4 เ ftle асс- d v dt ckt

ds dt Date Pege 2. 2 am aLording to be found 1 he qiven e