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2 years ago

astronauts brought back 500 lb of rock samples from the moon. how many kilograms did they bring back? 1 kg

Physics

1 answer:

Nadya [2.5K]2 years ago

8 0

Astronauts brought back 500 lbs rock samples from the moon. They brought back 227 kilograms of sample.

An Astronaut is a person who has been educated, prepared, and put into space as part of a human spaceflight mission to serve as a commander or crew member. The word is frequently used to refer to scientists as well as professional space explorers, while being usually reserved for all of those who travel into space on a daily basis.

According to the given question, Astronaut bought back 550 lbs sample,

We know that,

2.20lbs = 1 kg.

1 lbs = 1/2.20 kg

1 lbs = 0.45 kg

Hence, 500 lbs equals 227kgs according to the given relation.

So, Astronauts brought back 227 kilograms of sample.

Learn more about Astronaut here, brainly.com/question/11244838

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Light-rail passenger trains that provide transportation within and between cities speed up and slow down with a nearly constant

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Answer:

25 m/s

Explanation:

Given that:

Initial speed, u = 4 m/s

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a = 7 / 8 = 0.875m/s²

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2 years ago

In trampoline competitions, a good jump is one that lasts about 1.8 seconds. (A) How high can an athlete who stays in the air 1.

KonstantinChe [14]

Answer:

3.97305 m

Explanation:

a = Acceleration due to gravity = 9.81 m/s²

If a jump lasts for 1.8 seconds this means that from the moment when the person leaves the ground till the person touches the ground again it takes 1.8 seconds. So, maximum height reached will be at half the time of the jump i.e., 0.9 seconds.

u = Initial velocity = 0

Equation of motion

$s=ut+\frac{1}{2}at^2\\\Rightarrow s=0t+\frac{1}{2}9.81\times 0.9^2\\\Rightarrow s=3.97305\ m$

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3 years ago