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A package is dropped from a helicopter that is moving upward at 20.0 m/s. If it takes 18.0s before the package strikes the ground, how high above the ground was the package when it was released?
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Aug 8, 2021
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A package is dropped from a helicopter that is moving upward at 20.0 m/s.
If it takes 18.0s before the package strikes the ground, how high above the ground was the package when it was released?
Physics
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Thewayup
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Step-by-step explanation:
We have for velocity of package v= 20 - 9.8t and for distance from the ground y = h + 20t - 4.9t2.
We have y = 0 and t = 18.0 s we have h = 4.9·182 - 20·18 = 1227.6 m.
Velocity at landing v = 20 - 9.8·18 = - 156.4 m/s
Ulex
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Aug 13, 2021
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