How Long Before Overhead Should Supplies Be Dropped from a Plane?

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To determine when to drop supplies from an airplane flying at 160 km/h to reach a target 120 m below, the equations of motion are utilized. The key equation discussed is X = 1/2 g t², where g represents gravitational acceleration. The challenge lies in calculating the time it takes for the supplies to fall 120 m. The discussion indicates confusion about the correct values to input into the equation. Ultimately, the goal is to find the precise time before the plane is directly overhead for the supplies to be released.
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Homework Statement


The pilot of an airplane traveling 160 km/h wants to drop supplies to flood victims isolated on a patch of land 120 m below. The supplies should be dropped how many seconds before the plane is directly overhead?


Homework Equations

equations of motion



The Attempt at a Solution

i don't know what 2 plug in...
 
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Natali said:

Homework Statement


The pilot of an airplane traveling 160 km/h wants to drop supplies to flood victims isolated on a patch of land 120 m below. The supplies should be dropped how many seconds before the plane is directly overhead?


Homework Equations

equations of motion



The Attempt at a Solution

i don't know what 2 plug in...

They want to know how long it takes to drop 160m.

X = 1/2 g t2
 

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