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Assoli18 [71]
3 years ago
13

Why do astronauts' weights differ in space?

Physics
1 answer:
OLga [1]3 years ago
7 0

Answer:

There is less gravitational force in space.

Explanation:

Gravity doesn't exist as it does on Earth. Earth's gravity is as 6 times stronger as it is on the moon.

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If he completes the 200 m dash in 23 s and runs at constant speed throughout the race, what is his centripetal acceleration as h
Blababa [14]

Incomplete question.The complete one is here

A runner taking part in the 200m dash must run around the end of a track that has a circular arc with a radius curvature of 30m. The runner starts the race at a constant speed. If she completes the 200m dash in 23s and runs at constant speed throughout the race, what is her centripetal acceleration as she runs the curved portion of the track?

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a_c=2.523m/s^2

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Given data

L_{length}=200m\\r_{radius}=30m\\t_{time}=23s

Required

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Solution

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V_{velocity}=\frac{L_{length}}{t_{time}}\\V_{velocity}=\frac{200m}{23s}\\V_{velocity}=8.7m/s

The centripetal acceleration is given by:

a_{c}=\frac{V_{velocity}^2}{r_{radius}}\\ a_c=\frac{(8.7m/s)^2}{30m}\\ a_c=2.523m/s^2

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