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Grade: 11

                        

A baloon is ascending at a velocity of 12 m/s A packet is dropped from it when it is at height of 65m from the ground. If packet reaches the ground after time T....then find value of T

one year ago

Answers : (2)

Arun
25384 Points
							
initial velocity of packet = -12m/s  (taking up direction as negative)
acceleration, a = 10m/ss
height, h = 65m
thus using second equation of motion you can find out the time taken and of course the packet will reach the ground.
one year ago
Saurabh Koranglekar
askIITians Faculty
10227 Points
							Dear student

T be t1 +t2

t1 = 12/g = 1.2 sec
Height above ground = 65 + h
h = (144/20)= 7.2 m

t2 = sqrt( 2*72.2 /g ) = 3.8

T = 5 seconds

Regards
one year ago
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