People jumping in the air simultaneously

  • Thread starter rottentreats64
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In summary, if 270 million people in the United States jumped up in the air simultaneously, pushing off Earth with an average force of 800N each for a time of 0.10s, the Earth would move at a velocity of 276851851851851.85 m/s. This is based on the equation ft=▲mv, where the net force exerted on the Earth is 80x270,000,000.
  • #1
rottentreats64
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2. If 270 million people in the United States jumped up in the air simultaneously, pushing of Earth with an average force of 800N each for a time of 0.10s, what would happen to the 5.98 x 1024 kg Earth?

And this is what i wrote:
Basically why I did was try to find out the velocity, to see if the Earth moves from the force applied. So by identifying the variable needed for ft=▲mv, I get
800(.1)= 5980000000000000000000000x. Leaving me with 80/5980000000000000000000000, leaving me with the velocity of 1.3 m/s. Therefore when 270 million people jump at the same time the Earth will move at 1.3 m/s.

is this right?
 
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  • #2
How did you get that huge number? Doesn't it say there's a 800 N force from every person? So, the impulse of the net force should equal 800 * 270 * 10^6 * 0.1, shouldn't it?
 
  • #3
yea but i thought it was focusing on the Earth and she gave me...oh wait the question didnt paste into the topic correctly...its supposed to be 5.98x10 with and exponent of 24

thats where i got that big numba lol
 
  • #4
rottentreats64 said:
...its supposed to be 5.98x10 with and exponent of 24

Yes, I'm aware of that. :smile:
 
  • #5
than doesn't 5.98x10to the 24 equal 5980000000000000000000000?
 
  • #6
rottentreats64 said:
than doesn't 5.98x10to the 24 equal 5980000000000000000000000?

Yes, it does. (I didn't count the zeroes, though. :biggrin:) Anyway, it is practical to write the same number as 5.98 x 10^24.

Anyway, that's the mass of the Earth. But the relevant thing is the fact that you multiplied 800 with 0.1 only. That is the average force exerted on the Earth by one person only.
 
  • #7
ohh yea so then the net force would have been 80x270,000,000
 
  • #8
so now my answer would be:

Therefore when 270 million people jump at the same time the Earth will move at 276851851851851.85 m/s.
 

Related to People jumping in the air simultaneously

What is the purpose of studying people jumping in the air simultaneously?

Studying people jumping in the air simultaneously can help us understand group dynamics and human behavior in a coordinated movement. It can also be used for team building and promoting unity.

How do you measure the success of people jumping in the air simultaneously?

The success of people jumping in the air simultaneously can be measured by the level of synchronicity and height achieved by the group. It can also be measured by the number of participants and their ability to maintain the jump for a certain amount of time.

What factors can affect the success of people jumping in the air simultaneously?

The success of people jumping in the air simultaneously can be affected by factors such as the physical abilities of the participants, their level of coordination, and the environment they are jumping in (e.g. surface, weather).

What are the benefits of people jumping in the air simultaneously?

Aside from the potential team building effects, people jumping in the air simultaneously can also improve physical fitness, coordination, and balance. It can also boost morale and create a sense of achievement among participants.

Are there any risks involved in people jumping in the air simultaneously?

There can be some risks involved in people jumping in the air simultaneously, such as potential injuries from improper technique or landing. It is important to have proper supervision and instruction to ensure the safety of all participants.

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