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finlep [7]
2 years ago
15

In Space, an astronaut releases a wrench from his hand. The wrench has a mass of 4 grams and is traveling with a velocity of -15

m/s. The Astronaut’s mass is 70kg. What is his Velocity?
Physics
1 answer:
Cloud [144]2 years ago
8 0

Answer: -8.5 × 10^-4 m/s

Explanation:

The following can be deduced from the question:

m₁ = Mass of a wrench = 4 g = 0.004 kg

v₁ =Speed of wrench = -15 m/s

m₂ = Mass of the Astronaut = 70 kg

The velocity will be calculated as:

m₁v₁ = m₂v₂

v₂ = [0.004 × (-15)] / 70

= -8.5 × 10^-4 m/s

Therefore, the velocity is -8.5 × 10^-4 m/s

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\\ \rm\Rrightarrow \dfrac{1}{u}+\dfrac{1}{v}=\dfrac{1}{f}

\\ \rm\Rrightarrow \dfrac{1}{u}=\dfrac{1}{-10}+\dfrac{1}{38}

\\ \rm\Rrightarrow \dfrac{1}{u}=\dfrac{-19+5}{190}

\\ \rm\Rrightarrow \dfrac{1}{u}=\dfrac{-14}{190}

\\ \rm\Rrightarrow u=\dfrac{190}{-14}

\\ \rm\Rrightarrow u=13.6cm

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