Question

An elevator in which man is standing in moving upwards with speed 10 m sec if man drops a coin from height 2.45 m it reaches floor after time

Answer 1

with respect to an observer on ground the coin when relased will freely fall i.e. the initial vel of the coin is 0

using s=1/2gt^2

2.45*2=gt^2

t^2=4.9/9.8=2

t=(1/2)^2

Answer 2

Answer:

1/root2 sec

Step-by-step explanation:

An observer on ground the coin when relased will freely fall i.e. the initial vel of the coin is = 0

➾ S = 1 / 2gt²

➾ 2.45 × 2 = gt²

➾ t² = 4.9 / 9.8 = 1/2

➾ t = ( 1 / root 2 )

_________

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