3. You are walking in Paris alongside the Eiffel Tower and suddenly a croissant smacks you on the head and knocks you to the ground. From yo

Question

3. You are walking in Paris alongside the Eiffel Tower and suddenly a croissant smacks you on the head and knocks you to the ground. From your handy dandy tourist guidebook you find that the height of the Eiffel Tower is 300.5 m. If you neglect air resistance, calculate how many seconds the croissant dropped before it tagged you on the head.​

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Ben Gia 6 months 2021-07-11T18:38:05+00:00 1 Answers 13 views 0

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  1. Nho
    0
    2021-07-11T18:39:56+00:00
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    Answer:

    7.827s

    Explanation:

    Given that

    Height of the Eiffel tower is (h) =300.5m

    Acceleration due to gravity (g) =9.81m/s2

    From the kinematic equations

    s =ut+(1/2)gt2

    It is free fall then u =0

    Then h =(1/2)gt2

    Then the time taken for the croissant dropped before it tagged you on the head. is t =Sqrt(2h/g) =Sqrt(2*300.5/9.81)=7.827s

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