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
kkurt [141]
3 years ago
8

When you jump off the earth, your momentum changes, but the Earth does not move. 1)If momentum is always conserved, why do we no

t feel the earth moving every time someone jumps? 2) If we were to get everyone to jump at once, could we change the momentum of the earth?
Physics
1 answer:
Mazyrski [523]3 years ago
8 0

This question is off-base and misleading from the beginning.

When you jump off the Earth, your momentum changes, <em>and the Earth moves away from you with an equal change of momentum in the opposite direction</em>.

1). Momentum is conserved when you jump.  But we don't feel the Earth moving. Since the Earth's mass is a bazillion times greater than YOUR mass, the speed with which the Earth moves away from you is only one bazillionth of your speed.  That way, the product of (mass) x (speed) is the SAME for you and for the Earth, and momentum is conserved.

2). <em>Of course !</em>  If everyone jumped at the same time, the Earth's momentum would change.  In answer-(1), I explained that the Earth's momentum changes whenever <em>ONE PERSON</em> jumps.  So 7 billion people all jumping at the same time would certainly make it change.

You might be interested in
Explain how you find the density of a liquid subtance example corn syrup
STatiana [176]
Use the density formula:

Mass of the substance
————————————
Volume of the substance

This gives you the density.


Corn syrup has a density of about 1.4 grams per cubic centimeter, and has the highest density of all liquids!

Hope this helps!
3 0
3 years ago
Compute the work performed when 32 pounds is lifted 10 feet.
Murljashka [212]
W = force * displacement
W = 32 pounds * 10 feet
Now you need to convert it to newton and meters
W = 142 N * 3.048 m = 434 J
(I approximated the conversions- I hope it helps)
7 0
3 years ago
this refers to the process of manufacturing that introduced powered machinery to the production of goods​
Sidana [21]
This had to do with gain power and trade inequality business
5 0
3 years ago
Within a vacuum, the property to all electromagnetic waves is their
bezimeni [28]
The answer is D) Velocity
7 0
3 years ago
What are 5 landforms formed by river erosion
horsena [70]
Valleys, waterfalls, flood plains, meanders, and oxbow lakes 
8 0
3 years ago
Other questions:
  • A student builds and calibrates an accelerometer and uses it to determine the speed of her car around a certain unbanked highway
    8·1 answer
  • A racecar on a straight track, starting from rest*, steps on the
    11·1 answer
  • What energy transformation takes place when you turn on a space heater?
    15·1 answer
  • A ballon is losing altitude at a constant rate of 25 kilometers per day. if a landing is defined as an impact with a velocity of
    10·1 answer
  • Whether calculating speed or acceleration, this data is required
    9·1 answer
  • An apple falls out of a tree and takes 1.75 seconds to strike the ground.what was the velocity of the apple when it hit the grou
    5·2 answers
  • Driving to work one morning, you get a flat tire. When using the car jack, you apply 120N of force to the jack and the jack in t
    6·1 answer
  • Can someone pls help me with this
    11·1 answer
  • Please help! Didn’t have right subject so i chose one that may be similar.
    15·2 answers
  • Which of the following statements about lipids and carbohydrates is true?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!