Exam A package is dropped from a helicopter from a height of 3,136 ft. If the equation for height as a function of time is

Question

Exam
A package is dropped from a helicopter
from a height of 3,136 ft. If the equation
for height as a function of time is
h(t) = -16t2 + initial height where t is time
in seconds and h(t) is height in feet, how
many seconds will it take for the package
to hit the ground?
[?] seconds

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Nguyệt Ánh 6 months 2021-08-30T07:01:07+00:00 1 Answers 0 views 0

Answers ( )

  1. Gerda
    0
    2021-08-30T07:02:12+00:00
    Reply

    Answer:

    14 seconds

    Step-by-step explanation:

    initial height =3136ft

    h(t)=-16t^2 +3136ft

    as the package hits the ground h(t)=0

    -16t^2 +3136=0

    -16t^2 =-3136

    t^2 =196

    t=√196

    14 seconds or -14 seconds

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )