3 years ago

اور مدنیSin A /1-cosA= cot1/2عورت سے

Mathematics

1 answer:

Finger [1]3 years ago

8 0

Please re-explain? I don’t understand.?

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A.The observation deck of tall skyscraper 370 m above the street. Determine the time required for a penny to free fall from the

Ainat [17]

Answer:

8.68 seconds

Step-by-step explanation:

Given:

Height of the deck above the street, s = 370 m

Since the condition is of free falling

thus,

initial speed, u = 0

Acceleration of the penny = acceleration due to gravity, g = 9.81 m/s²

Now,

from Newton's equation of motion, we have

$s=ut+\frac{1}{2}at^2$

here,

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a is the acceleration

t is the time

on substituting the values, we get

$370=0\times t+\frac{1}{2}\times9.81\times t^2$

t² = 75.433

t = 8.68 seconds

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aliina [53]

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3 years ago

اور مدنیSin A /1-cosA= cot1/2عورت سے​

اور مدنیSin A /1-cosA= cot1/2عورت سے