Carlos M asked in Science & MathematicsPhysics · 2 months ago

A plane and a cloud?

How long does a 70 meter plane, at a speed of 80m/s, take to cross a 4000m cloud?

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3 Answers

  • 2 months ago
    Favourite answer

    The speed is reported to only 2 significant digits and even if it was more than that, you can't measure accurately the size of a cloud. So we estimate the answer as 4000 / 80 s = 50 s

    How long does a 70 m train, at a speed of 80.0 m/s, take to cross a 4.00 km tunnel?

    Assuming "time to cross" means the time to when its front end enters the tunnel to when its back end leaves the tunnel,(4000 + 70)/80.0 s = 50.9 s

  • BJJ
    Lv 7
    2 months ago

    From nose to tail 50.875 seconds 

  • oubaas
    Lv 7
    2 months ago

    t = (4,000+70)/80 = 50.9 sec 

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