Question

G dimensional analysis physics-GX MasteringPhysics HW 3 Free Fall X 17520542 X Be Print PHYCH flashcards Easy X + session.masteringphysics.com/myct/itemView?assignment ProblemlD=140830023&offset=next <HW 3 Free Fall Problem 2.48 A rocket rises vertically, from rest with an acceleration of 32 m/s until it runs out of fuel at an altitude of 825 m After this point, its acceleration is that of gravity downward Part A What is the velocity of the rocket when it runs out of fuel? Express your answer to two significant figures and include the appropriate units. HA 2 m Value S Submit Previous Answers Request Answer X Incorrect: Try Again: 5 attempts remaining Part How long does it takes to reach ot? Express your answer to two significantures and include the appropriate units Type here to search o

Answer 1

Initial speed of rocket (u) = 0

Acceleration (a) = 3.2 m/s²​​​​​​

Height (H) = 825 meter

From newton's equation of motion -

V² = U² + 2aH

V² = 0 + 2 x 3.2 x 825

Speed (V) = 72.06 m/s