1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Furkat [3]
3 years ago
8

While on an interplanetary mission, a 58.5-kg astronaut is floating toward the front of her ship at 0.15 m/s, relative to the sh

ip. She wishes to stop moving, relative to the ship. She decides to throw away the 2.50-kg book she's carrying. What should the approximate speed and direction of the book be to achieve her goal?
Physics
1 answer:
Aleksandr-060686 [28]3 years ago
6 0

Answer:

v_f_{book}=3.66m/sec towards front of the ship

Explanation:

Mass of the astronaut m_1=58.5kg

Mass of the book m_2=2.5kg

Initially common velocity of astronaut and book v = 0.15 m /sec

After throwing book astronaut will come to the rest

So final velocity of astronaut v_f_{astronaut}=0

We have to find the final velocity of the book

According to conservation of momentum

(m_1+m_2)v=m_1v_f_{astronaut}+m_2v_f_{book}

(58.5+2.5)\times 0.15=58.5\times0+2.5\times v_f_{book}

v_f_{book}=3.66m/sec towards front of the ship

You might be interested in
What happens when energy in the molecules of an ice cube when it begins to melt
blagie [28]

Water freezes at zero degrees Celsius (32 degrees Fahrenheit). The solid ice particles absorb heat energy from the warmer air, giving the particles energy and enabling them to move away from one another. ... This is what happens when the ice cube (a solid) turns into water (a liquid)


6 0
4 years ago
A 78-kg skydiver has a speed of 62 m/s , what is the kinetic energy?​
Cloud [144]

Answer:

149,916J

Explanation:

Pneumonic device: Kevin is half-mad and very square

this translates to: KE=(1/2)mv^2 !!

KE=(1/2)(78)(62^2)

KE=(39)(3844)

KE=149,916 Joules

3 0
3 years ago
Read 2 more answers
A measurement of density (mass/volume) is performed by measuring the mass of a sample of a rough cubic piece of metal on a balan
koban [17]

Answer:

Random errorrs

1) Variations in the level of the eye when we measure the dimensions of the cubic piece using the metric rule.

2) Possible vibrations or disbalance when we measure the mass of the of the cylinder.

Systematic errors

3) Wrong calibration for the balance and that represent a measurement wrong

Explanation:

Previous concepts

Random error represent an statistical error associated to the effect random in the experiment.

Systematic error is a "repeatable error associated with faulty equipment or a flawed experiment design", so is an error non controlled.

Solution to the problem

So as we can see we have two possible types of errors : random and systematic errors. For this stuation the list of 3 errors required are:

Random errors

1) Variations in the level of the eye when we measure the dimensions of the cubic piece using the metric rule.

2) Possible vibrations or disbalance when we measure the mass of the of the cylinder.

Systematic errors

3) Wrong calibration for the balance and that represent a measurement wrong

8 0
4 years ago
plz halp! For the PV graph shown above, explain whether heat is added to the gas or removed from the gas during the process indi
Delicious77 [7]

Answer:

There's no PV graph. kindly provide it so we help

5 0
3 years ago
until a train is a safe distance from the station, it must travel at 5 m/s. Once the train is on open track , it can speed up to
kiruha [24]

Answer:

5

Explanation:

6 0
3 years ago
Other questions:
  • What temperature, in ∘c, is a blackbody whose emission spectrum peaks at 250 nm ?
    14·1 answer
  • Six friends are at a pizzeria. They want to order enough pizza so that each person can eat at least 2/5 . ​ start fraction, 2, d
    8·1 answer
  • What elements are the most reactive
    13·2 answers
  • A fugitive tries to hop on a freight train traveling at a constant speed of 5.0 m/s. Just as an empty box car passes him, the fu
    11·2 answers
  • What is the kinetic energy of a body mass 5kgwhich moves with velocity of 4m/s​
    10·2 answers
  • An aluminum cylinder with a radius of 2.7 cm and a height of 67 cm is used as one leg of a workbench. The workbench pushes down
    12·1 answer
  • Change in speed over a given period of time is
    11·2 answers
  • A sound wave enters a new medium where sound travels faster. How does this affect the frequency and wavelength of the sound?
    9·2 answers
  • A block with a mass of 0.28 kg is attached to a horizontal spring. The block is pulled back from its equilibrium position until
    12·1 answer
  • 30 POINTS PLS HELP NO LINKS PLS :/
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!