ngPhysics: Assignment4F17- Intemet C https://session myct/itemV 86562257 Assignm

Question

ngPhysics: Assignment4F17- Intemet C https://session myct/itemV 86562257 Assignment4F1Problem 4.7 previous/ 17 of 23 Problem 4.7 A hot-air balloon is drifting in level flight due east at 22 m/s due to a altitude in order to clear the top of a hill 130 m to the east. light wind The pilot suddenly notices that the balloon must gain 24 m of Part A How much time does the pilot have to make the altitude change without crashing into the hill? Express your answer to two significant figures and include appropriate units. 59 s Submit My Answers Give Up Correct Part B What minimum, constant, upward acceleration is needed in order to clear the hill? Express your answer to two significant figures and include appropriate units. 4-10-2

Explanation / Answer

along vertical

y = voy*t + (1/2)*ay*t^2

24 = 0 + (1/2)*a*59^2

anet = 1.4*10^-2 m/s^2

accelration required = g + a = 9.814 m/s^2

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part (c)

vx= vox = 2.2 m/s <<<----ANSWER

===============

part D

vy = voy + anet*t

vy = 0 + 0.014*59

vy = 0.83 m/s <<<-----------ANSWER

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