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
pychu [463]
3 years ago
14

PLEASE HELP ASAP AND SHOW WORK!!! A 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance.

Find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. Show your work assuming the rock earth system is closed.
Physics
1 answer:
Sav [38]3 years ago
7 0

Time taken to fall the rock from rest

here we know that

\Delta y = 5 m

v_i = 0

a = 10 m/s^2

now we have

\Delta y = v_i t + \frac{1}{2}at^2

5 = \frac{1}{2}10t^2

t = 1 s

Now we know that

F\Delta t = \Delta P

here Force (F) is due to gravity

so we have

F = mg = 14(10) = 140 N

now we can plug in all data

140 \times 1 = \Delta P

\Delta P = 140 kg m/s

So change in momentum of rock will be 140 kg m/s

Now we know from Newton's III law

F_{rock} = F_{earth}

so we have

\Delta P_{earth} = \Delta P_{rock} = 140 Ns

now we have

m(v_f - v_i) = 140

6\times 10^{24}(v_f - 0) = 140

v_f = 2.33 \times 10^{-23} m/s

so above is the speed of Earth

You might be interested in
Reaction _______ refers to the tendency of a reaction to occur without the application of outside force or energy to sustain the
babymother [125]
<span>spontaneity is the answer, hope this helps!!</span>
6 0
4 years ago
Is the substance an atom or a molecule?
ANTONII [103]

Answer:

A pair of oxygen atoms is a molecule of oxygen. A molecule is the smallest particle of a substance that exists independently. Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are made up of two atoms.

Explanation:

6 0
3 years ago
The frequency of a wave remains constant if the medium, temperature, and pressure do not change.
Shalnov [3]

Trueeeeeee

The frequency of a wave remains constant if the medium, temperature, and pressure do not change.

7 0
3 years ago
Read 2 more answers
What is the answer to {36m= ? dm}
Andrew [12]

Answer:

360

Explanation:

just add a 0 when using dm

8 0
3 years ago
How are electromagnets and bar magnets alike and how are they different ?
lozanna [386]

An electromagnet is made from a coil of wire which acts as amagnet when an electric current passes through it. Often anelectromagnet is wrapped around a core of ferromagnetic material like steel, which enhances the magnetic field produced by the coil.

7 0
3 years ago
Other questions:
  • How does temperature change as you go from the surface toward the center of the earth?
    8·1 answer
  • When a light source like a star or group of stars is moving away from the Earth, the wavelengths of the light change, and a ____
    15·1 answer
  • Which statement correctly describes the relationship between power, voltage, and current?
    14·2 answers
  • Two technicians are discussing electromagnetic induction. Technician A says that the induced voltage can be increased if the spe
    8·1 answer
  • Hole filling fasteners (for example, MS20470 rivets) should not be used in composite structures primarily because of the?
    14·1 answer
  • Electric force and magnetic force are the only forces that can both do what? *
    14·1 answer
  • Two identical small metal spheres with q1 &gt; 0 and |q1| &gt; |q2| attract each other with a force of magnitude 72.1 mN when se
    12·1 answer
  • If the temperature warning light/gauge goes on, what should one do?
    8·1 answer
  • Why is important the electromagnetism, diff usages, and how will be our World without it
    13·1 answer
  • How do the particles in a solid move
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!