Physics, 09.07.2019 04:30 2sally2

Arelief airplane is delivering a food package to a group of people stranded on a very small island. the island is too small for the plane to land on, and the only way to deliver the package is by dropping it. the airplane flies horizontally with constant speed of 442km/hour at an altitude of 575m . for all parts, assume that the "island" refers to the point at a distance d from the point at which the package is released. ignore the height of this point above sea level. assume that the acceleration due to gravity is g = 9.80m/s^2 . a) after a package is ejected from the plane, how long will it take for it to reach sea level from the time it is ejected? assume that the package, like the plane, has an initial velocity of 442 km/hour in the horizontal direction. express your answer numerically in seconds. neglect air resistance. b) if the package is to land right on the island, at what horizontal distance d from the plane to the island should the package be released? express the distance numerically in meters. c) what is the speed vf of the package when it hits the ground? express your answer numerically in meters per second.

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We have that for the Question "A) After a package is ejected from the plane, how long will it take for it to reach sea level from the time it is ejected? Assume that the package, like the plane, has an initial velocity of 442 km/hour in the horizontal direction.

Express your answer numerically in seconds. Neglect air resistance.

B) If the package is to land right on the island, at what horizontal distance D from the plane to the island should the package be released?

Express the distance numerically in meters.

C) What is the speed vf of the package when it hits the ground?"

It can be said that

It takes

to reach the sea levelThe package is released at 1269.83m

from the plane

From the question we are told

The airplane flies horizontally with constant speed of 442km/hour at an altitude of 575m . Assume that the acceleration due to gravity is g = 9.80m/s^2 .

Therefore,

$H = U_y*t\frac{1}{2}gt^2\\\\where U_y=0\\\\575 = \frac{1}{2}9.8*t^2\\\\t = \sqrt\frac{575*2}{9.8}\\\\= 10.83 sec$

Therefore, the distance covered by the package

$D = U_x*t\\\\=(422*\frac{5}{18})m/s^2 * \sqrt\frac{575*2}{9.8}\\\\= 1269.83 m$

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Answer from: rodriguezzamyy

speed of the plane is given as

v = 442 km/h = 122.8 m/s

height of the plane is

h = 575 m

acceleration due to gravity is

g = 9.80 m/s^2

part a)

when package is dropped its vertical speed is zero so we can use kinematics to find the time of drop

$\delta y = v_y * t + \frac{1}{2}gt^2$

$575 = 0 + \frac{1}{2}*9.80*t^2$

t = 10.83 s

Part b)

Horizontal distance moved by the package is given by

$\delta x = v_x * t$

$\delta x = 122.8 * 10.83$

$\delta x = 1330.3 m$

Part c)

final speed in x direction

v_x = 122.8 m/s

final speed in y direction

v_y = 9.8*10.83 = 106.13 m/s

so net speed as it hit the ground will be

$v = \sqrt{v_y^2 + v_x^2}$

$v = \sqrt{122.8^2 + 106.13^2}$

v = 162.3 m/s

Answer from: Quest

elctricity and magnet is conversion to it

Answer from: Quest

explanation:

to push or pull an object in a certain direction is known as force. a force in moving an object from one place to another.

force depends on the mass of an object. so, more is the mass of an object more will be the force required to move the object.

thus, we can conclude that the use of force to move an object is push or pull.

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Arelief airplane is delivering a food package to a group of people stranded on a very small island....

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