3 years ago

TRUE or FALSE: Feeling "weightless" can be the result of accelerating downwards towards Earth.

1 answer:

4 0

I believe it would be false because in outer space, everything is weightless due to the weak gravitational force which makes things float in the air. Weightless means no weight to it and if we’re accelerating down that means the gravitational is working but in this case it would probably be false

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An airplane accelerates from rest down a runway at 3.20 m/s2 for 32.8 seconds until it lifts off the ground. Determine the dista

vagabundo [1.1K]

Answer:

s=1721.344m ,v=104.96m/s.

Explanation:

using thr equation of motion;

$s=ut+\frac{1}{2}at^{2}$

u=0, plane starts from rest,

$s=\frac{1}{2}at^{2}$

$a=3.2m/s^{2}, t=32.8s \\ s=\frac{1}{2}*3.2*32.8^{2}$

s=1721.344m

v=u+at

v=0 +3.2*32.8

v=104.96m/s

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3 years ago

Mary’s mass is 57 kg and Elizabeth’s weight is 624 N. Each one carries a 9 kg box to the library. Who has the greater normal for

stepan [7]

Elizabeth, weight formula is 624 divided by 9.8 which is greater than 57kg

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3 years ago

A physics student throws a ball thrown horizontally from the top of a building with a speed of 8 m/s. The student measures the h

Alekssandra [29.7K]

Answer:

Following are the solution to the given question:

Explanation:

Please find the complete question in the attached file.

$a_x = 0\\\\a_y = -g = -9.81\ \ \frac{m}{s^2} \\\\v_{iy} = 0 \\\\y = v_{iy} \times t+ \frac{1}{2ay} \times t^2 \\\\ 15 = \frac{1}{2} \times 9.8 \times t^2 \\\\t = \sqrt{(2 \times \frac{15}{9.8})} \\\\$

$= 1.75 \ sec \\\\$

Distance:

$x = v_{ix} \times t \\\\$

$= 8 \times 1.75\\\\= 14 m$

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3 years ago

The Womersley number measured for a hummingbird artery is __________ the Womersley number measured for a human artery. Assume th

Tpy6a [65]

The answer is the same..

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3 years ago

When the solar system formed the spheres that lost most of their gases became the?

Lelechka [254]

The spheres that lost most of their gases are the terrestrial planets.

Edit: The terrestrial planets are also known as the inner planets or rocky planets, so if you have multiple choice options or you learnt a different term, pick that instead.

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3 years ago