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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?

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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$0.024= 0.13 \sqrt{1-\frac{v^2}{c^2}}$

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3 years ago

A wheel rotates about a fixed axis with a constant angular acceleration of 3.3 rad/s2. The diameter of the wheel is 21 cm. What

AleksandrR [38]

Answer:

The the linear speed (in m/s) of a point on the rim of this wheel at an instant=0.418 m/s

Explanation:

We are given that

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$a=\sqrt{a^2_t+a^2_r}$

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$v=((10.5\times 10^{-2})^2\times 2.7699)^{\frac{1}{4}}$

$v=0.418 m/s$

Hence, the the linear speed (in m/s) of a point on the rim of this wheel at an instant=0.418 m/s

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